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- /*
- * libev event processing core, watcher management
- *
- * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
- * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
- * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
- * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License ("GPL") version 2 or any later version,
- * in which case the provisions of the GPL are applicable instead of
- * the above. If you wish to allow the use of your version of this file
- * only under the terms of the GPL and not to allow others to use your
- * version of this file under the BSD license, indicate your decision
- * by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL. If you do not delete the
- * provisions above, a recipient may use your version of this file under
- * either the BSD or the GPL.
- */
-
- /* this big block deduces configuration from config.h */
- #ifndef EV_STANDALONE
- # ifdef EV_CONFIG_H
- # include EV_CONFIG_H
- # else
- # include "config.h"
- # endif
-
- #ifdef __GNUC__
- #pragma GCC diagnostic ignored "-Wunused-value"
- #endif
-
- # if HAVE_FLOOR
- # ifndef EV_USE_FLOOR
- # define EV_USE_FLOOR 1
- # endif
- # endif
-
- # if HAVE_CLOCK_SYSCALL
- # ifndef EV_USE_CLOCK_SYSCALL
- # define EV_USE_CLOCK_SYSCALL 1
- # ifndef EV_USE_REALTIME
- # define EV_USE_REALTIME 0
- # endif
- # ifndef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 1
- # endif
- # endif
- # elif !defined EV_USE_CLOCK_SYSCALL
- # define EV_USE_CLOCK_SYSCALL 0
- # endif
-
- # if HAVE_CLOCK_GETTIME
- # ifndef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 1
- # endif
- # ifndef EV_USE_REALTIME
- # define EV_USE_REALTIME 0
- # endif
- # else
- # ifndef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 0
- # endif
- # ifndef EV_USE_REALTIME
- # define EV_USE_REALTIME 0
- # endif
- # endif
-
- # if HAVE_NANOSLEEP
- # ifndef EV_USE_NANOSLEEP
- # define EV_USE_NANOSLEEP EV_FEATURE_OS
- # endif
- # else
- # undef EV_USE_NANOSLEEP
- # define EV_USE_NANOSLEEP 0
- # endif
-
- # if HAVE_SELECT && HAVE_SYS_SELECT_H
- # ifndef EV_USE_SELECT
- # define EV_USE_SELECT EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_SELECT
- # define EV_USE_SELECT 0
- # endif
-
- # if HAVE_POLL && HAVE_POLL_H
- # ifndef EV_USE_POLL
- # define EV_USE_POLL EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_POLL
- # define EV_USE_POLL 0
- # endif
-
- # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
- # ifndef EV_USE_EPOLL
- # define EV_USE_EPOLL EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_EPOLL
- # define EV_USE_EPOLL 0
- # endif
-
- # if HAVE_LINUX_AIO_ABI_H
- # ifndef EV_USE_LINUXAIO
- # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
- # endif
- # else
- # undef EV_USE_LINUXAIO
- # define EV_USE_LINUXAIO 0
- # endif
-
- # if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
- # ifndef EV_USE_IOURING
- # define EV_USE_IOURING EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_IOURING
- # define EV_USE_IOURING 0
- # endif
-
- # if HAVE_KQUEUE && HAVE_SYS_EVENT_H
- # ifndef EV_USE_KQUEUE
- # define EV_USE_KQUEUE EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_KQUEUE
- # define EV_USE_KQUEUE 0
- # endif
-
- # if HAVE_PORT_H && HAVE_PORT_CREATE
- # ifndef EV_USE_PORT
- # define EV_USE_PORT EV_FEATURE_BACKENDS
- # endif
- # else
- # undef EV_USE_PORT
- # define EV_USE_PORT 0
- # endif
-
- # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
- # ifndef EV_USE_INOTIFY
- # define EV_USE_INOTIFY EV_FEATURE_OS
- # endif
- # else
- # undef EV_USE_INOTIFY
- # define EV_USE_INOTIFY 0
- # endif
-
- # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
- # ifndef EV_USE_SIGNALFD
- # define EV_USE_SIGNALFD EV_FEATURE_OS
- # endif
- # else
- # undef EV_USE_SIGNALFD
- # define EV_USE_SIGNALFD 0
- # endif
-
- # if HAVE_EVENTFD
- # ifndef EV_USE_EVENTFD
- # define EV_USE_EVENTFD EV_FEATURE_OS
- # endif
- # else
- # undef EV_USE_EVENTFD
- # define EV_USE_EVENTFD 0
- # endif
-
- # if HAVE_SYS_TIMERFD_H && HAVE_TIMERFD
- # ifndef EV_USE_TIMERFD
- # define EV_USE_TIMERFD EV_FEATURE_OS
- # endif
- # else
- # undef EV_USE_TIMERFD
- # define EV_USE_TIMERFD 0
- # endif
-
- #endif
-
- /* OS X, in its infinite idiocy, actually HARDCODES
- * a limit of 1024 into their select. Where people have brains,
- * OS X engineers apparently have a vacuum. Or maybe they were
- * ordered to have a vacuum, or they do anything for money.
- * This might help. Or not.
- * Note that this must be defined early, as other include files
- * will rely on this define as well.
- */
- #define _DARWIN_UNLIMITED_SELECT 1
-
- #include <stdlib.h>
- #include <string.h>
- #include <fcntl.h>
- #include <stddef.h>
-
- #include <stdio.h>
-
- #include <assert.h>
- #include <errno.h>
- #include <sys/types.h>
- #include <time.h>
- #include <limits.h>
-
- #include <signal.h>
-
- #ifdef EV_H
- # include EV_H
- #else
- # include "ev.h"
- #endif
-
- #if EV_NO_THREADS
- # undef EV_NO_SMP
- # define EV_NO_SMP 1
- # undef ECB_NO_THREADS
- # define ECB_NO_THREADS 1
- #endif
- #if EV_NO_SMP
- # undef EV_NO_SMP
- # define ECB_NO_SMP 1
- #endif
-
- #ifndef _WIN32
- # include <sys/time.h>
- # include <sys/wait.h>
- # include <unistd.h>
- #else
- # include <io.h>
- # define WIN32_LEAN_AND_MEAN
- # include <winsock2.h>
- # include <windows.h>
- # ifndef EV_SELECT_IS_WINSOCKET
- # define EV_SELECT_IS_WINSOCKET 1
- # endif
- # undef EV_AVOID_STDIO
- #endif
-
- /* this block tries to deduce configuration from header-defined symbols and defaults */
-
- /* try to deduce the maximum number of signals on this platform */
- #if defined EV_NSIG
- /* use what's provided */
- #elif defined NSIG
- # define EV_NSIG (NSIG)
- #elif defined _NSIG
- # define EV_NSIG (_NSIG)
- #elif defined SIGMAX
- # define EV_NSIG (SIGMAX+1)
- #elif defined SIG_MAX
- # define EV_NSIG (SIG_MAX+1)
- #elif defined _SIG_MAX
- # define EV_NSIG (_SIG_MAX+1)
- #elif defined MAXSIG
- # define EV_NSIG (MAXSIG+1)
- #elif defined MAX_SIG
- # define EV_NSIG (MAX_SIG+1)
- #elif defined SIGARRAYSIZE
- # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
- #elif defined _sys_nsig
- # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
- #else
- # define EV_NSIG (8 * sizeof (sigset_t) + 1)
- #endif
-
- #ifndef EV_USE_FLOOR
- # define EV_USE_FLOOR 0
- #endif
-
- #ifndef EV_USE_CLOCK_SYSCALL
- # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
- # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
- # else
- # define EV_USE_CLOCK_SYSCALL 0
- # endif
- #endif
-
- #if !(_POSIX_TIMERS > 0)
- # ifndef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 0
- # endif
- # ifndef EV_USE_REALTIME
- # define EV_USE_REALTIME 0
- # endif
- #endif
-
- #ifndef EV_USE_MONOTONIC
- # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
- # define EV_USE_MONOTONIC EV_FEATURE_OS
- # else
- # define EV_USE_MONOTONIC 0
- # endif
- #endif
-
- #ifndef EV_USE_REALTIME
- # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
- #endif
-
- #ifndef EV_USE_NANOSLEEP
- # if _POSIX_C_SOURCE >= 199309L
- # define EV_USE_NANOSLEEP EV_FEATURE_OS
- # else
- # define EV_USE_NANOSLEEP 0
- # endif
- #endif
-
- #ifndef EV_USE_SELECT
- # define EV_USE_SELECT EV_FEATURE_BACKENDS
- #endif
-
- #ifndef EV_USE_POLL
- # ifdef _WIN32
- # define EV_USE_POLL 0
- # else
- # define EV_USE_POLL EV_FEATURE_BACKENDS
- # endif
- #endif
-
- #ifndef EV_USE_EPOLL
- # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
- # define EV_USE_EPOLL EV_FEATURE_BACKENDS
- # else
- # define EV_USE_EPOLL 0
- # endif
- #endif
-
- #ifndef EV_USE_KQUEUE
- # define EV_USE_KQUEUE 0
- #endif
-
- #ifndef EV_USE_PORT
- # define EV_USE_PORT 0
- #endif
-
- #ifndef EV_USE_LINUXAIO
- # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
- # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
- # else
- # define EV_USE_LINUXAIO 0
- # endif
- #endif
-
- #ifndef EV_USE_IOURING
- # if __linux /* later checks might disable again */
- # define EV_USE_IOURING 1
- # else
- # define EV_USE_IOURING 0
- # endif
- #endif
-
- #ifndef EV_USE_INOTIFY
- # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
- # define EV_USE_INOTIFY EV_FEATURE_OS
- # else
- # define EV_USE_INOTIFY 0
- # endif
- #endif
-
- #ifndef EV_PID_HASHSIZE
- # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
- #endif
-
- #ifndef EV_INOTIFY_HASHSIZE
- # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
- #endif
-
- #ifndef EV_USE_EVENTFD
- # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
- # define EV_USE_EVENTFD EV_FEATURE_OS
- # else
- # define EV_USE_EVENTFD 0
- # endif
- #endif
-
- #ifndef EV_USE_SIGNALFD
- # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
- # define EV_USE_SIGNALFD EV_FEATURE_OS
- # else
- # define EV_USE_SIGNALFD 0
- # endif
- #endif
-
- #ifndef EV_USE_TIMERFD
- # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
- # define EV_USE_TIMERFD EV_FEATURE_OS
- # else
- # define EV_USE_TIMERFD 0
- # endif
- #endif
-
- #if 0 /* debugging */
- # define EV_VERIFY 3
- # define EV_USE_4HEAP 1
- # define EV_HEAP_CACHE_AT 1
- #endif
-
- #ifndef EV_VERIFY
- # define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
- #endif
-
- #ifndef EV_USE_4HEAP
- # define EV_USE_4HEAP EV_FEATURE_DATA
- #endif
-
- #ifndef EV_HEAP_CACHE_AT
- # define EV_HEAP_CACHE_AT EV_FEATURE_DATA
- #endif
-
- #ifdef __ANDROID__
- /* supposedly, android doesn't typedef fd_mask */
- # undef EV_USE_SELECT
- # define EV_USE_SELECT 0
- /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
- # undef EV_USE_CLOCK_SYSCALL
- # define EV_USE_CLOCK_SYSCALL 0
- #endif
-
- /* aix's poll.h seems to cause lots of trouble */
- #ifdef _AIX
- /* AIX has a completely broken poll.h header */
- # undef EV_USE_POLL
- # define EV_USE_POLL 0
- #endif
-
- /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
- /* which makes programs even slower. might work on other unices, too. */
- #if EV_USE_CLOCK_SYSCALL
- # include <sys/syscall.h>
- # ifdef SYS_clock_gettime
- # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
- # undef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 1
- # define EV_NEED_SYSCALL 1
- # else
- # undef EV_USE_CLOCK_SYSCALL
- # define EV_USE_CLOCK_SYSCALL 0
- # endif
- #endif
-
- /* this block fixes any misconfiguration where we know we run into trouble otherwise */
-
- #ifndef CLOCK_MONOTONIC
- # undef EV_USE_MONOTONIC
- # define EV_USE_MONOTONIC 0
- #endif
-
- #ifndef CLOCK_REALTIME
- # undef EV_USE_REALTIME
- # define EV_USE_REALTIME 0
- #endif
-
- #if !EV_STAT_ENABLE
- # undef EV_USE_INOTIFY
- # define EV_USE_INOTIFY 0
- #endif
-
- #if __linux && EV_USE_IOURING
- # include <linux/version.h>
- # if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
- # undef EV_USE_IOURING
- # define EV_USE_IOURING 0
- # endif
- #endif
-
- #if !EV_USE_NANOSLEEP
- /* hp-ux has it in sys/time.h, which we unconditionally include above */
- # if !defined _WIN32 && !defined __hpux
- # include <sys/select.h>
- # endif
- #endif
-
- #if EV_USE_LINUXAIO
- # include <sys/syscall.h>
- # if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
- # define EV_NEED_SYSCALL 1
- # else
- # undef EV_USE_LINUXAIO
- # define EV_USE_LINUXAIO 0
- # endif
- #endif
-
- #if EV_USE_IOURING
- # include <sys/syscall.h>
- # if !SYS_io_uring_register && __linux && !__alpha
- # define SYS_io_uring_setup 425
- # define SYS_io_uring_enter 426
- # define SYS_io_uring_register 427
- # endif
- # if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
- # define EV_NEED_SYSCALL 1
- # else
- # undef EV_USE_IOURING
- # define EV_USE_IOURING 0
- # endif
- #endif
-
- #if EV_USE_INOTIFY
- # include <sys/statfs.h>
- # include <sys/inotify.h>
- /* some very old inotify.h headers don't have IN_DONT_FOLLOW */
- # ifndef IN_DONT_FOLLOW
- # undef EV_USE_INOTIFY
- # define EV_USE_INOTIFY 0
- # endif
- #endif
-
- #if EV_USE_EVENTFD
- /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
- # include <stdint.h>
- # ifndef EFD_NONBLOCK
- # define EFD_NONBLOCK O_NONBLOCK
- # endif
- # ifndef EFD_CLOEXEC
- # ifdef O_CLOEXEC
- # define EFD_CLOEXEC O_CLOEXEC
- # else
- # define EFD_CLOEXEC 02000000
- # endif
- # endif
- EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
- #endif
-
- #if EV_USE_SIGNALFD
- /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
- # include <stdint.h>
- # ifndef SFD_NONBLOCK
- # define SFD_NONBLOCK O_NONBLOCK
- # endif
- # ifndef SFD_CLOEXEC
- # ifdef O_CLOEXEC
- # define SFD_CLOEXEC O_CLOEXEC
- # else
- # define SFD_CLOEXEC 02000000
- # endif
- # endif
- EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
-
- struct signalfd_siginfo
- {
- uint32_t ssi_signo;
- char pad[128 - sizeof (uint32_t)];
- };
- #endif
-
- /* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
- #if EV_USE_TIMERFD
- # include <sys/timerfd.h>
- /* timerfd is only used for periodics */
- # if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
- # undef EV_USE_TIMERFD
- # define EV_USE_TIMERFD 0
- # endif
- #endif
-
- /*****************************************************************************/
-
- #if EV_VERIFY >= 3
- # define EV_FREQUENT_CHECK ev_verify (EV_A)
- #else
- # define EV_FREQUENT_CHECK do { } while (0)
- #endif
-
- /*
- * This is used to work around floating point rounding problems.
- * This value is good at least till the year 4000.
- */
- #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
- // #define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
-
- #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
- #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
- #define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
-
- /* find a portable timestamp that is "always" in the future but fits into time_t.
- * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
- * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
- #define EV_TSTAMP_HUGE \
- (sizeof (time_t) >= 8 ? 10000000000000. \
- : 0 < (time_t)4294967295 ? 4294967295. \
- : 2147483647.) \
-
- #ifndef EV_TS_CONST
- # define EV_TS_CONST(nv) nv
- # define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
- # define EV_TS_FROM_USEC(us) us * 1e-6
- # define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
- # define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
- # define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
- # define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
- #endif
-
- /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
- /* ECB.H BEGIN */
- /*
- * libecb - http://software.schmorp.de/pkg/libecb
- *
- * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
- * Copyright (©) 2011 Emanuele Giaquinta
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
- * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
- * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
- * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License ("GPL") version 2 or any later version,
- * in which case the provisions of the GPL are applicable instead of
- * the above. If you wish to allow the use of your version of this file
- * only under the terms of the GPL and not to allow others to use your
- * version of this file under the BSD license, indicate your decision
- * by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL. If you do not delete the
- * provisions above, a recipient may use your version of this file under
- * either the BSD or the GPL.
- */
-
- #ifndef ECB_H
- #define ECB_H
-
- /* 16 bits major, 16 bits minor */
- #define ECB_VERSION 0x00010008
-
- #include <string.h> /* for memcpy */
-
- #if defined (_WIN32) && !defined (__MINGW32__)
- typedef signed char int8_t;
- typedef unsigned char uint8_t;
- typedef signed char int_fast8_t;
- typedef unsigned char uint_fast8_t;
- typedef signed short int16_t;
- typedef unsigned short uint16_t;
- typedef signed int int_fast16_t;
- typedef unsigned int uint_fast16_t;
- typedef signed int int32_t;
- typedef unsigned int uint32_t;
- typedef signed int int_fast32_t;
- typedef unsigned int uint_fast32_t;
- #if __GNUC__
- typedef signed long long int64_t;
- typedef unsigned long long uint64_t;
- #else /* _MSC_VER || __BORLANDC__ */
- typedef signed __int64 int64_t;
- typedef unsigned __int64 uint64_t;
- #endif
- typedef int64_t int_fast64_t;
- typedef uint64_t uint_fast64_t;
- #ifdef _WIN64
- #define ECB_PTRSIZE 8
- typedef uint64_t uintptr_t;
- typedef int64_t intptr_t;
- #else
- #define ECB_PTRSIZE 4
- typedef uint32_t uintptr_t;
- typedef int32_t intptr_t;
- #endif
- #else
- #include <inttypes.h>
- #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
- #define ECB_PTRSIZE 8
- #else
- #define ECB_PTRSIZE 4
- #endif
- #endif
-
- #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
- #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
-
- #ifndef ECB_OPTIMIZE_SIZE
- #if __OPTIMIZE_SIZE__
- #define ECB_OPTIMIZE_SIZE 1
- #else
- #define ECB_OPTIMIZE_SIZE 0
- #endif
- #endif
-
- /* work around x32 idiocy by defining proper macros */
- #if ECB_GCC_AMD64 || ECB_MSVC_AMD64
- #if _ILP32
- #define ECB_AMD64_X32 1
- #else
- #define ECB_AMD64 1
- #endif
- #endif
-
- /* many compilers define _GNUC_ to some versions but then only implement
- * what their idiot authors think are the "more important" extensions,
- * causing enormous grief in return for some better fake benchmark numbers.
- * or so.
- * we try to detect these and simply assume they are not gcc - if they have
- * an issue with that they should have done it right in the first place.
- */
- #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
- #define ECB_GCC_VERSION(major,minor) 0
- #else
- #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
- #endif
-
- #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
-
- #if __clang__ && defined __has_builtin
- #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
- #else
- #define ECB_CLANG_BUILTIN(x) 0
- #endif
-
- #if __clang__ && defined __has_extension
- #define ECB_CLANG_EXTENSION(x) __has_extension (x)
- #else
- #define ECB_CLANG_EXTENSION(x) 0
- #endif
-
- #define ECB_CPP (__cplusplus+0)
- #define ECB_CPP11 (__cplusplus >= 201103L)
- #define ECB_CPP14 (__cplusplus >= 201402L)
- #define ECB_CPP17 (__cplusplus >= 201703L)
-
- #if ECB_CPP
- #define ECB_C 0
- #define ECB_STDC_VERSION 0
- #else
- #define ECB_C 1
- #define ECB_STDC_VERSION __STDC_VERSION__
- #endif
-
- #define ECB_C99 (ECB_STDC_VERSION >= 199901L)
- #define ECB_C11 (ECB_STDC_VERSION >= 201112L)
- #define ECB_C17 (ECB_STDC_VERSION >= 201710L)
-
- #if ECB_CPP
- #define ECB_EXTERN_C extern "C"
- #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
- #define ECB_EXTERN_C_END }
- #else
- #define ECB_EXTERN_C extern
- #define ECB_EXTERN_C_BEG
- #define ECB_EXTERN_C_END
- #endif
-
- /*****************************************************************************/
-
- /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
- /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
-
- #if ECB_NO_THREADS
- #define ECB_NO_SMP 1
- #endif
-
- #if ECB_NO_SMP
- #define ECB_MEMORY_FENCE do { } while (0)
- #endif
-
- /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
- #if __xlC__ && ECB_CPP
- #include <builtins.h>
- #endif
-
- #if 1400 <= _MSC_VER
- #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
- #endif
-
- #ifndef ECB_MEMORY_FENCE
- #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
- #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
- #if __i386 || __i386__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
- #elif ECB_GCC_AMD64
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
- #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
- #elif defined __ARM_ARCH_2__ \
- || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
- || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
- || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
- || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
- || defined __ARM_ARCH_5TEJ__
- /* should not need any, unless running old code on newer cpu - arm doesn't support that */
- #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
- || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
- || defined __ARM_ARCH_6T2__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
- #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
- || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
- #elif __aarch64__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
- #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
- #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
- #elif defined __s390__ || defined __s390x__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
- #elif defined __mips__
- /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
- /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
- #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
- #elif defined __alpha__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
- #elif defined __hppa__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
- #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
- #elif defined __ia64__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
- #elif defined __m68k__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
- #elif defined __m88k__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
- #elif defined __sh__
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
- #elif defined __loongarch__ || __loongarch64
- #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dbar %0 ": : "I"(0) : "memory")
- #endif
- #endif
- #endif
-
- #ifndef ECB_MEMORY_FENCE
- #if ECB_GCC_VERSION(4,7)
- /* see comment below (stdatomic.h) about the C11 memory model. */
- #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
- #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
- #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
- #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
-
- #elif ECB_CLANG_EXTENSION(c_atomic)
- /* see comment below (stdatomic.h) about the C11 memory model. */
- #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
- #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
- #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
- #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
-
- #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
- #define ECB_MEMORY_FENCE __sync_synchronize ()
- #elif _MSC_VER >= 1500 /* VC++ 2008 */
- /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
- #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
- #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
- #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
- #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
- #elif _MSC_VER >= 1400 /* VC++ 2005 */
- #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
- #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
- #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
- #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
- #elif defined _WIN32
- #include <WinNT.h>
- #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
- #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
- #include <mbarrier.h>
- #define ECB_MEMORY_FENCE __machine_rw_barrier ()
- #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
- #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
- #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
- #elif __xlC__
- #define ECB_MEMORY_FENCE __sync ()
- #endif
- #endif
-
- #ifndef ECB_MEMORY_FENCE
- #if ECB_C11 && !defined __STDC_NO_ATOMICS__
- /* we assume that these memory fences work on all variables/all memory accesses, */
- /* not just C11 atomics and atomic accesses */
- #include <stdatomic.h>
- #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
- #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
- #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
- #endif
- #endif
-
- #ifndef ECB_MEMORY_FENCE
- #if !ECB_AVOID_PTHREADS
- /*
- * if you get undefined symbol references to pthread_mutex_lock,
- * or failure to find pthread.h, then you should implement
- * the ECB_MEMORY_FENCE operations for your cpu/compiler
- * OR provide pthread.h and link against the posix thread library
- * of your system.
- */
- #include <pthread.h>
- #define ECB_NEEDS_PTHREADS 1
- #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
-
- static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
- #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
- #endif
- #endif
-
- #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
- #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
- #endif
-
- #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
- #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
- #endif
-
- #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
- #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
- #endif
-
- /*****************************************************************************/
-
- #if ECB_CPP
- #define ecb_inline static inline
- #elif ECB_GCC_VERSION(2,5)
- #define ecb_inline static __inline__
- #elif ECB_C99
- #define ecb_inline static inline
- #else
- #define ecb_inline static
- #endif
-
- #if ECB_GCC_VERSION(3,3)
- #define ecb_restrict __restrict__
- #elif ECB_C99
- #define ecb_restrict restrict
- #else
- #define ecb_restrict
- #endif
-
- typedef int ecb_bool;
-
- #define ECB_CONCAT_(a, b) a ## b
- #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
- #define ECB_STRINGIFY_(a) # a
- #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
- #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
-
- #define ecb_function_ ecb_inline
-
- #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
- #define ecb_attribute(attrlist) __attribute__ (attrlist)
- #else
- #define ecb_attribute(attrlist)
- #endif
-
- #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
- #define ecb_is_constant(expr) __builtin_constant_p (expr)
- #else
- /* possible C11 impl for integral types
- typedef struct ecb_is_constant_struct ecb_is_constant_struct;
- #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
-
- #define ecb_is_constant(expr) 0
- #endif
-
- #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
- #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
- #else
- #define ecb_expect(expr,value) (expr)
- #endif
-
- #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
- #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
- #else
- #define ecb_prefetch(addr,rw,locality)
- #endif
-
- /* no emulation for ecb_decltype */
- #if ECB_CPP11
- // older implementations might have problems with decltype(x)::type, work around it
- template<class T> struct ecb_decltype_t { typedef T type; };
- #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
- #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
- #define ecb_decltype(x) __typeof__ (x)
- #endif
-
- #if _MSC_VER >= 1300
- #define ecb_deprecated __declspec (deprecated)
- #else
- #define ecb_deprecated ecb_attribute ((__deprecated__))
- #endif
-
- #if _MSC_VER >= 1500
- #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
- #elif ECB_GCC_VERSION(4,5)
- #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
- #else
- #define ecb_deprecated_message(msg) ecb_deprecated
- #endif
-
- #if _MSC_VER >= 1400
- #define ecb_noinline __declspec (noinline)
- #else
- #define ecb_noinline ecb_attribute ((__noinline__))
- #endif
-
- #define ecb_unused ecb_attribute ((__unused__))
- #define ecb_const ecb_attribute ((__const__))
- #define ecb_pure ecb_attribute ((__pure__))
-
- #if ECB_C11 || __IBMC_NORETURN
- /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
- #define ecb_noreturn _Noreturn
- #elif ECB_CPP11
- #define ecb_noreturn [[noreturn]]
- #elif _MSC_VER >= 1200
- /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
- #define ecb_noreturn __declspec (noreturn)
- #else
- #define ecb_noreturn ecb_attribute ((__noreturn__))
- #endif
-
- #if ECB_GCC_VERSION(4,3)
- #define ecb_artificial ecb_attribute ((__artificial__))
- #define ecb_hot ecb_attribute ((__hot__))
- #define ecb_cold ecb_attribute ((__cold__))
- #else
- #define ecb_artificial
- #define ecb_hot
- #define ecb_cold
- #endif
-
- /* put around conditional expressions if you are very sure that the */
- /* expression is mostly true or mostly false. note that these return */
- /* booleans, not the expression. */
- #define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
- #define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
- /* for compatibility to the rest of the world */
- #define ecb_likely(expr) ecb_expect_true (expr)
- #define ecb_unlikely(expr) ecb_expect_false (expr)
-
- /* count trailing zero bits and count # of one bits */
- #if ECB_GCC_VERSION(3,4) \
- || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
- && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
- && ECB_CLANG_BUILTIN(__builtin_popcount))
- /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
- #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
- #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
- #define ecb_ctz32(x) __builtin_ctz (x)
- #define ecb_ctz64(x) __builtin_ctzll (x)
- #define ecb_popcount32(x) __builtin_popcount (x)
- /* no popcountll */
- #else
- ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
- ecb_function_ ecb_const int
- ecb_ctz32 (uint32_t x)
- {
- #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
- unsigned long r;
- _BitScanForward (&r, x);
- return (int)r;
- #else
- int r = 0;
-
- x &= ~x + 1; /* this isolates the lowest bit */
-
- #if ECB_branchless_on_i386
- r += !!(x & 0xaaaaaaaa) << 0;
- r += !!(x & 0xcccccccc) << 1;
- r += !!(x & 0xf0f0f0f0) << 2;
- r += !!(x & 0xff00ff00) << 3;
- r += !!(x & 0xffff0000) << 4;
- #else
- if (x & 0xaaaaaaaa) r += 1;
- if (x & 0xcccccccc) r += 2;
- if (x & 0xf0f0f0f0) r += 4;
- if (x & 0xff00ff00) r += 8;
- if (x & 0xffff0000) r += 16;
- #endif
-
- return r;
- #endif
- }
-
- ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
- ecb_function_ ecb_const int
- ecb_ctz64 (uint64_t x)
- {
- #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
- unsigned long r;
- _BitScanForward64 (&r, x);
- return (int)r;
- #else
- int shift = x & 0xffffffff ? 0 : 32;
- return ecb_ctz32 (x >> shift) + shift;
- #endif
- }
-
- ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
- ecb_function_ ecb_const int
- ecb_popcount32 (uint32_t x)
- {
- x -= (x >> 1) & 0x55555555;
- x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
- x = ((x >> 4) + x) & 0x0f0f0f0f;
- x *= 0x01010101;
-
- return x >> 24;
- }
-
- ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
- ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
- {
- #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
- unsigned long r;
- _BitScanReverse (&r, x);
- return (int)r;
- #else
- int r = 0;
-
- if (x >> 16) { x >>= 16; r += 16; }
- if (x >> 8) { x >>= 8; r += 8; }
- if (x >> 4) { x >>= 4; r += 4; }
- if (x >> 2) { x >>= 2; r += 2; }
- if (x >> 1) { r += 1; }
-
- return r;
- #endif
- }
-
- ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
- ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
- {
- #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
- unsigned long r;
- _BitScanReverse64 (&r, x);
- return (int)r;
- #else
- int r = 0;
-
- if (x >> 32) { x >>= 32; r += 32; }
-
- return r + ecb_ld32 (x);
- #endif
- }
- #endif
-
- ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
- ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
- ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
- ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
-
- ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
- ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
- {
- return ( (x * 0x0802U & 0x22110U)
- | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
- }
-
- ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
- ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
- {
- x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
- x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
- x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
- x = ( x >> 8 ) | ( x << 8);
-
- return x;
- }
-
- ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
- ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
- {
- x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
- x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
- x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
- x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
- x = ( x >> 16 ) | ( x << 16);
-
- return x;
- }
-
- /* popcount64 is only available on 64 bit cpus as gcc builtin */
- /* so for this version we are lazy */
- ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
- ecb_function_ ecb_const int
- ecb_popcount64 (uint64_t x)
- {
- return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
- }
-
- ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
- ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
- ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
- ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
- ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
- ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
- ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
- ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
-
- ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
- ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
- ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
- ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
- ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
- ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
- ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
- ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
-
- #if ECB_CPP
-
- inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
- inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
- inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
- inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
-
- inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
- inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
- inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
- inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
-
- inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
- inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
- inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
- inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
-
- inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
- inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
- inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
- inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
-
- inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
- inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
- inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
-
- inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
- inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
- inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
- inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
-
- inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
- inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
- inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
- inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
-
- #endif
-
- #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
- #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
- #define ecb_bswap16(x) __builtin_bswap16 (x)
- #else
- #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
- #endif
- #define ecb_bswap32(x) __builtin_bswap32 (x)
- #define ecb_bswap64(x) __builtin_bswap64 (x)
- #elif _MSC_VER
- #include <stdlib.h>
- #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
- #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
- #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
- #else
- ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
- ecb_function_ ecb_const uint16_t
- ecb_bswap16 (uint16_t x)
- {
- return ecb_rotl16 (x, 8);
- }
-
- ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
- ecb_function_ ecb_const uint32_t
- ecb_bswap32 (uint32_t x)
- {
- return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
- }
-
- ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
- ecb_function_ ecb_const uint64_t
- ecb_bswap64 (uint64_t x)
- {
- return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
- }
- #endif
-
- #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
- #define ecb_unreachable() __builtin_unreachable ()
- #else
- /* this seems to work fine, but gcc always emits a warning for it :/ */
- ecb_inline ecb_noreturn void ecb_unreachable (void);
- ecb_inline ecb_noreturn void ecb_unreachable (void) { }
- #endif
-
- /* try to tell the compiler that some condition is definitely true */
- #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
-
- ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
- ecb_inline ecb_const uint32_t
- ecb_byteorder_helper (void)
- {
- /* the union code still generates code under pressure in gcc, */
- /* but less than using pointers, and always seems to */
- /* successfully return a constant. */
- /* the reason why we have this horrible preprocessor mess */
- /* is to avoid it in all cases, at least on common architectures */
- /* or when using a recent enough gcc version (>= 4.6) */
- #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
- || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
- #define ECB_LITTLE_ENDIAN 1
- return 0x44332211;
- #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
- || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
- #define ECB_BIG_ENDIAN 1
- return 0x11223344;
- #else
- union
- {
- uint8_t c[4];
- uint32_t u;
- } u = { 0x11, 0x22, 0x33, 0x44 };
- return u.u;
- #endif
- }
-
- ecb_inline ecb_const ecb_bool ecb_big_endian (void);
- ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
- ecb_inline ecb_const ecb_bool ecb_little_endian (void);
- ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
-
- /*****************************************************************************/
- /* unaligned load/store */
-
- ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
- ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
- ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
-
- ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
- ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
- ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
-
- ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
- ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
- ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
-
- ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
- ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
- ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
-
- ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
- ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
- ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
-
- ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
- ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
- ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
-
- ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
- ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
- ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
-
- ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
- ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
- ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
-
- ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
- ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
- ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
-
- ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
- ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
- ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
-
- #if ECB_CPP
-
- inline uint8_t ecb_bswap (uint8_t v) { return v; }
- inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
- inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
- inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
-
- template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
- template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
- template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
- template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
- template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
- template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
- template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
- template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
-
- template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
- template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
- template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
- template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
- template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
- template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
- template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
- template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
-
- #endif
-
- /*****************************************************************************/
-
- #if ECB_GCC_VERSION(3,0) || ECB_C99
- #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
- #else
- #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
- #endif
-
- #if ECB_CPP
- template<typename T>
- static inline T ecb_div_rd (T val, T div)
- {
- return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
- }
- template<typename T>
- static inline T ecb_div_ru (T val, T div)
- {
- return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
- }
- #else
- #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
- #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
- #endif
-
- #if ecb_cplusplus_does_not_suck
- /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
- template<typename T, int N>
- static inline int ecb_array_length (const T (&arr)[N])
- {
- return N;
- }
- #else
- #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
- #endif
-
- /*****************************************************************************/
-
- ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
- ecb_function_ ecb_const uint32_t
- ecb_binary16_to_binary32 (uint32_t x)
- {
- unsigned int s = (x & 0x8000) << (31 - 15);
- int e = (x >> 10) & 0x001f;
- unsigned int m = x & 0x03ff;
-
- if (ecb_expect_false (e == 31))
- /* infinity or NaN */
- e = 255 - (127 - 15);
- else if (ecb_expect_false (!e))
- {
- if (ecb_expect_true (!m))
- /* zero, handled by code below by forcing e to 0 */
- e = 0 - (127 - 15);
- else
- {
- /* subnormal, renormalise */
- unsigned int s = 10 - ecb_ld32 (m);
-
- m = (m << s) & 0x3ff; /* mask implicit bit */
- e -= s - 1;
- }
- }
-
- /* e and m now are normalised, or zero, (or inf or nan) */
- e += 127 - 15;
-
- return s | (e << 23) | (m << (23 - 10));
- }
-
- ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
- ecb_function_ ecb_const uint16_t
- ecb_binary32_to_binary16 (uint32_t x)
- {
- unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
- unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
- unsigned int m = x & 0x007fffff;
-
- x &= 0x7fffffff;
-
- /* if it's within range of binary16 normals, use fast path */
- if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
- {
- /* mantissa round-to-even */
- m += 0x00000fff + ((m >> (23 - 10)) & 1);
-
- /* handle overflow */
- if (ecb_expect_false (m >= 0x00800000))
- {
- m >>= 1;
- e += 1;
- }
-
- return s | (e << 10) | (m >> (23 - 10));
- }
-
- /* handle large numbers and infinity */
- if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
- return s | 0x7c00;
-
- /* handle zero, subnormals and small numbers */
- if (ecb_expect_true (x < 0x38800000))
- {
- /* zero */
- if (ecb_expect_true (!x))
- return s;
-
- /* handle subnormals */
-
- /* too small, will be zero */
- if (e < (14 - 24)) /* might not be sharp, but is good enough */
- return s;
-
- m |= 0x00800000; /* make implicit bit explicit */
-
- /* very tricky - we need to round to the nearest e (+10) bit value */
- {
- unsigned int bits = 14 - e;
- unsigned int half = (1 << (bits - 1)) - 1;
- unsigned int even = (m >> bits) & 1;
-
- /* if this overflows, we will end up with a normalised number */
- m = (m + half + even) >> bits;
- }
-
- return s | m;
- }
-
- /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
- m >>= 13;
-
- return s | 0x7c00 | m | !m;
- }
-
- /*******************************************************************************/
- /* floating point stuff, can be disabled by defining ECB_NO_LIBM */
-
- /* basically, everything uses "ieee pure-endian" floating point numbers */
- /* the only noteworthy exception is ancient armle, which uses order 43218765 */
- #if 0 \
- || __i386 || __i386__ \
- || ECB_GCC_AMD64 \
- || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
- || defined __s390__ || defined __s390x__ \
- || defined __mips__ \
- || defined __alpha__ \
- || defined __hppa__ \
- || defined __ia64__ \
- || defined __m68k__ \
- || defined __m88k__ \
- || defined __sh__ \
- || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
- || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
- || defined __aarch64__
- #define ECB_STDFP 1
- #else
- #define ECB_STDFP 0
- #endif
-
- #ifndef ECB_NO_LIBM
-
- #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
-
- /* only the oldest of old doesn't have this one. solaris. */
- #ifdef INFINITY
- #define ECB_INFINITY INFINITY
- #else
- #define ECB_INFINITY HUGE_VAL
- #endif
-
- #ifdef NAN
- #define ECB_NAN NAN
- #else
- #define ECB_NAN ECB_INFINITY
- #endif
-
- #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
- #define ecb_ldexpf(x,e) ldexpf ((x), (e))
- #define ecb_frexpf(x,e) frexpf ((x), (e))
- #else
- #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
- #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
- #endif
-
- /* convert a float to ieee single/binary32 */
- ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
- ecb_function_ ecb_const uint32_t
- ecb_float_to_binary32 (float x)
- {
- uint32_t r;
-
- #if ECB_STDFP
- memcpy (&r, &x, 4);
- #else
- /* slow emulation, works for anything but -0 */
- uint32_t m;
- int e;
-
- if (x == 0e0f ) return 0x00000000U;
- if (x > +3.40282346638528860e+38f) return 0x7f800000U;
- if (x < -3.40282346638528860e+38f) return 0xff800000U;
- if (x != x ) return 0x7fbfffffU;
-
- m = ecb_frexpf (x, &e) * 0x1000000U;
-
- r = m & 0x80000000U;
-
- if (r)
- m = -m;
-
- if (e <= -126)
- {
- m &= 0xffffffU;
- m >>= (-125 - e);
- e = -126;
- }
-
- r |= (e + 126) << 23;
- r |= m & 0x7fffffU;
- #endif
-
- return r;
- }
-
- /* converts an ieee single/binary32 to a float */
- ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
- ecb_function_ ecb_const float
- ecb_binary32_to_float (uint32_t x)
- {
- float r;
-
- #if ECB_STDFP
- memcpy (&r, &x, 4);
- #else
- /* emulation, only works for normals and subnormals and +0 */
- int neg = x >> 31;
- int e = (x >> 23) & 0xffU;
-
- x &= 0x7fffffU;
-
- if (e)
- x |= 0x800000U;
- else
- e = 1;
-
- /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
- r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
-
- r = neg ? -r : r;
- #endif
-
- return r;
- }
-
- /* convert a double to ieee double/binary64 */
- ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
- ecb_function_ ecb_const uint64_t
- ecb_double_to_binary64 (double x)
- {
- uint64_t r;
-
- #if ECB_STDFP
- memcpy (&r, &x, 8);
- #else
- /* slow emulation, works for anything but -0 */
- uint64_t m;
- int e;
-
- if (x == 0e0 ) return 0x0000000000000000U;
- if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
- if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
- if (x != x ) return 0X7ff7ffffffffffffU;
-
- m = frexp (x, &e) * 0x20000000000000U;
-
- r = m & 0x8000000000000000;;
-
- if (r)
- m = -m;
-
- if (e <= -1022)
- {
- m &= 0x1fffffffffffffU;
- m >>= (-1021 - e);
- e = -1022;
- }
-
- r |= ((uint64_t)(e + 1022)) << 52;
- r |= m & 0xfffffffffffffU;
- #endif
-
- return r;
- }
-
- /* converts an ieee double/binary64 to a double */
- ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
- ecb_function_ ecb_const double
- ecb_binary64_to_double (uint64_t x)
- {
- double r;
-
- #if ECB_STDFP
- memcpy (&r, &x, 8);
- #else
- /* emulation, only works for normals and subnormals and +0 */
- int neg = x >> 63;
- int e = (x >> 52) & 0x7ffU;
-
- x &= 0xfffffffffffffU;
-
- if (e)
- x |= 0x10000000000000U;
- else
- e = 1;
-
- /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
- r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
-
- r = neg ? -r : r;
- #endif
-
- return r;
- }
-
- /* convert a float to ieee half/binary16 */
- ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
- ecb_function_ ecb_const uint16_t
- ecb_float_to_binary16 (float x)
- {
- return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
- }
-
- /* convert an ieee half/binary16 to float */
- ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
- ecb_function_ ecb_const float
- ecb_binary16_to_float (uint16_t x)
- {
- return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
- }
-
- #endif
-
- #endif
-
- /* ECB.H END */
-
- #if ECB_MEMORY_FENCE_NEEDS_PTHREADS
- /* if your architecture doesn't need memory fences, e.g. because it is
- * single-cpu/core, or if you use libev in a project that doesn't use libev
- * from multiple threads, then you can define ECB_NO_THREADS when compiling
- * libev, in which cases the memory fences become nops.
- * alternatively, you can remove this #error and link against libpthread,
- * which will then provide the memory fences.
- */
- # error "memory fences not defined for your architecture, please report"
- #endif
-
- #ifndef ECB_MEMORY_FENCE
- # define ECB_MEMORY_FENCE do { } while (0)
- # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
- # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
- #endif
-
- #define inline_size ecb_inline
-
- #if EV_FEATURE_CODE
- # define inline_speed ecb_inline
- #else
- # define inline_speed ecb_noinline static
- #endif
-
- /*****************************************************************************/
- /* raw syscall wrappers */
-
- #if EV_NEED_SYSCALL
-
- #include <sys/syscall.h>
-
- /*
- * define some syscall wrappers for common architectures
- * this is mostly for nice looks during debugging, not performance.
- * our syscalls return < 0, not == -1, on error. which is good
- * enough for linux aio.
- * TODO: arm is also common nowadays, maybe even mips and x86
- * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
- */
- #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
- /* the costly errno access probably kills this for size optimisation */
-
- #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
- ({ \
- long res; \
- register unsigned long r6 __asm__ ("r9" ); \
- register unsigned long r5 __asm__ ("r8" ); \
- register unsigned long r4 __asm__ ("r10"); \
- register unsigned long r3 __asm__ ("rdx"); \
- register unsigned long r2 __asm__ ("rsi"); \
- register unsigned long r1 __asm__ ("rdi"); \
- if (narg >= 6) r6 = (unsigned long)(arg6); \
- if (narg >= 5) r5 = (unsigned long)(arg5); \
- if (narg >= 4) r4 = (unsigned long)(arg4); \
- if (narg >= 3) r3 = (unsigned long)(arg3); \
- if (narg >= 2) r2 = (unsigned long)(arg2); \
- if (narg >= 1) r1 = (unsigned long)(arg1); \
- __asm__ __volatile__ ( \
- "syscall\n\t" \
- : "=a" (res) \
- : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
- : "cc", "r11", "cx", "memory"); \
- errno = -res; \
- res; \
- })
-
- #endif
-
- #ifdef ev_syscall
- #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
- #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
- #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
- #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
- #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
- #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
- #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
- #else
- #define ev_syscall0(nr) syscall (nr)
- #define ev_syscall1(nr,arg1) syscall (nr, arg1)
- #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
- #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
- #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
- #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
- #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
- #endif
-
- #endif
-
- /*****************************************************************************/
-
- #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
-
- #if EV_MINPRI == EV_MAXPRI
- # define ABSPRI(w) (((W)w), 0)
- #else
- # define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
- #endif
-
- #define EMPTY /* required for microsofts broken pseudo-c compiler */
-
- typedef ev_watcher *W;
- typedef ev_watcher_list *WL;
- typedef ev_watcher_time *WT;
-
- #define ev_active(w) ((W)(w))->active
- #define ev_at(w) ((WT)(w))->at
-
- #if EV_USE_REALTIME
- /* sig_atomic_t is used to avoid per-thread variables or locking but still */
- /* giving it a reasonably high chance of working on typical architectures */
- static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
- #endif
-
- #if EV_USE_MONOTONIC
- static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
- static EV_ATOMIC_T monotonic_clock_id;
- #endif
- static EV_ATOMIC_T have_cheap_timer = 0;
-
- #ifndef EV_FD_TO_WIN32_HANDLE
- # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
- #endif
- #ifndef EV_WIN32_HANDLE_TO_FD
- # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
- #endif
- #ifndef EV_WIN32_CLOSE_FD
- # define EV_WIN32_CLOSE_FD(fd) close (fd)
- #endif
-
- #ifdef _WIN32
- # include "ev_win32.c"
- #endif
-
- /*****************************************************************************/
-
- #if EV_USE_LINUXAIO
- # include <linux/aio_abi.h> /* probably only needed for aio_context_t */
- #endif
-
- /* define a suitable floor function (only used by periodics atm) */
-
- #if EV_USE_FLOOR
- # include <math.h>
- # define ev_floor(v) floor (v)
- #else
-
- #include <float.h>
-
- /* a floor() replacement function, should be independent of ev_tstamp type */
- ecb_noinline
- static ev_tstamp
- ev_floor (ev_tstamp v)
- {
- /* the choice of shift factor is not terribly important */
- #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
- const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
- #else
- const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
- #endif
-
- /* special treatment for negative arguments */
- if (ecb_expect_false (v < 0.))
- {
- ev_tstamp f = -ev_floor (-v);
-
- return f - (f == v ? 0 : 1);
- }
-
- /* argument too large for an unsigned long? then reduce it */
- if (ecb_expect_false (v >= shift))
- {
- ev_tstamp f;
-
- if (v == v - 1.)
- return v; /* very large numbers are assumed to be integer */
-
- f = shift * ev_floor (v * (1. / shift));
- return f + ev_floor (v - f);
- }
-
- /* fits into an unsigned long */
- return (unsigned long)v;
- }
-
- #endif
-
- /*****************************************************************************/
-
- #ifdef __linux
- # include <sys/utsname.h>
- #endif
-
- ecb_noinline ecb_cold
- static unsigned int
- ev_linux_version (void)
- {
- #ifdef __linux
- unsigned int v = 0;
- struct utsname buf;
- int i;
- char *p = buf.release;
-
- if (uname (&buf))
- return 0;
-
- for (i = 3+1; --i; )
- {
- unsigned int c = 0;
-
- for (;;)
- {
- if (*p >= '0' && *p <= '9')
- c = c * 10 + *p++ - '0';
- else
- {
- p += *p == '.';
- break;
- }
- }
-
- v = (v << 8) | c;
- }
-
- return v;
- #else
- return 0;
- #endif
- }
-
- /*****************************************************************************/
-
- #if EV_AVOID_STDIO
- ecb_noinline ecb_cold
- static void
- ev_printerr (const char *msg)
- {
- write (STDERR_FILENO, msg, strlen (msg));
- }
- #endif
-
- static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
-
- ecb_cold
- void
- ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
- {
- syserr_cb = cb;
- }
-
- ecb_noinline ecb_cold
- static void
- ev_syserr (const char *msg)
- {
- if (!msg)
- msg = "(libev) system error";
-
- if (syserr_cb)
- syserr_cb (msg);
- else
- {
- #if EV_AVOID_STDIO
- ev_printerr (msg);
- ev_printerr (": ");
- ev_printerr (strerror (errno));
- ev_printerr ("\n");
- #else
- perror (msg);
- #endif
- abort ();
- }
- }
-
- static void *
- ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
- {
- /* some systems, notably openbsd and darwin, fail to properly
- * implement realloc (x, 0) (as required by both ansi c-89 and
- * the single unix specification, so work around them here.
- * recently, also (at least) fedora and debian started breaking it,
- * despite documenting it otherwise.
- */
-
- if (size)
- return realloc (ptr, size);
-
- free (ptr);
- return 0;
- }
-
- static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
-
- ecb_cold
- void
- ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
- {
- alloc = cb;
- }
-
- inline_speed void *
- ev_realloc (void *ptr, long size)
- {
- ptr = alloc (ptr, size);
-
- if (!ptr && size)
- {
- #if EV_AVOID_STDIO
- ev_printerr ("(libev) memory allocation failed, aborting.\n");
- #else
- fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
- #endif
- abort ();
- }
-
- return ptr;
- }
-
- #define ev_malloc(size) ev_realloc (0, (size))
- #define ev_free(ptr) ev_realloc ((ptr), 0)
-
- /*****************************************************************************/
-
- /* set in reify when reification needed */
- #define EV_ANFD_REIFY 1
-
- /* file descriptor info structure */
- typedef struct
- {
- WL head;
- unsigned char events; /* the events watched for */
- unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
- unsigned char emask; /* some backends store the actual kernel mask in here */
- unsigned char eflags; /* flags field for use by backends */
- #if EV_USE_EPOLL
- unsigned int egen; /* generation counter to counter epoll bugs */
- #endif
- #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
- SOCKET handle;
- #endif
- #if EV_USE_IOCP
- OVERLAPPED or, ow;
- #endif
- } ANFD;
-
- /* stores the pending event set for a given watcher */
- typedef struct
- {
- W w;
- int events; /* the pending event set for the given watcher */
- } ANPENDING;
-
- #if EV_USE_INOTIFY
- /* hash table entry per inotify-id */
- typedef struct
- {
- WL head;
- } ANFS;
- #endif
-
- /* Heap Entry */
- #if EV_HEAP_CACHE_AT
- /* a heap element */
- typedef struct {
- ev_tstamp at;
- WT w;
- } ANHE;
-
- #define ANHE_w(he) (he).w /* access watcher, read-write */
- #define ANHE_at(he) (he).at /* access cached at, read-only */
- #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
- #else
- /* a heap element */
- typedef WT ANHE;
-
- #define ANHE_w(he) (he)
- #define ANHE_at(he) (he)->at
- #define ANHE_at_cache(he)
- #endif
-
- #if EV_MULTIPLICITY
-
- struct ev_loop
- {
- ev_tstamp ev_rt_now;
- #define ev_rt_now ((loop)->ev_rt_now)
- #define VAR(name,decl) decl;
- #include "ev_vars.h"
- #undef VAR
- };
- #include "ev_wrap.h"
-
- static struct ev_loop default_loop_struct;
- EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
-
- #else
-
- EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
- #define VAR(name,decl) static decl;
- #include "ev_vars.h"
- #undef VAR
-
- static int ev_default_loop_ptr;
-
- #endif
-
- #if EV_FEATURE_API
- # define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
- # define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
- # define EV_INVOKE_PENDING invoke_cb (EV_A)
- #else
- # define EV_RELEASE_CB (void)0
- # define EV_ACQUIRE_CB (void)0
- # define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
- #endif
-
- #define EVBREAK_RECURSE 0x80
-
- /*****************************************************************************/
-
- #ifndef EV_HAVE_EV_TIME
- ev_tstamp
- ev_time (void) EV_NOEXCEPT
- {
- #if EV_USE_REALTIME
- if (ecb_expect_true (have_realtime))
- {
- struct timespec ts;
- clock_gettime (CLOCK_REALTIME, &ts);
- return EV_TS_GET (ts);
- }
- #endif
-
- {
- struct timeval tv;
- gettimeofday (&tv, 0);
- return EV_TV_GET (tv);
- }
- }
- #endif
-
- inline_size ev_tstamp
- get_clock (void)
- {
- #if EV_USE_MONOTONIC
- if (ecb_expect_true (have_monotonic))
- {
- struct timespec ts;
- clock_gettime (monotonic_clock_id, &ts);
- return ((ev_tstamp)ts.tv_sec) + ts.tv_nsec * 1e-9;
- }
- #endif
-
- return ev_time ();
- }
-
- #if EV_MULTIPLICITY
- ev_tstamp
- ev_now (EV_P) EV_NOEXCEPT
- {
- return ev_rt_now;
- }
- #endif
-
- void
- ev_sleep (ev_tstamp delay) EV_NOEXCEPT
- {
- if (delay > EV_TS_CONST (0.))
- {
- #if EV_USE_NANOSLEEP
- struct timespec ts;
-
- EV_TS_SET (ts, delay);
- nanosleep (&ts, 0);
- #elif defined _WIN32
- /* maybe this should round up, as ms is very low resolution */
- /* compared to select (µs) or nanosleep (ns) */
- Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
- #else
- struct timeval tv;
-
- /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
- /* something not guaranteed by newer posix versions, but guaranteed */
- /* by older ones */
- EV_TV_SET (tv, delay);
- select (0, 0, 0, 0, &tv);
- #endif
- }
- }
-
- /*****************************************************************************/
-
- #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
-
- /* find a suitable new size for the given array, */
- /* hopefully by rounding to a nice-to-malloc size */
- inline_size int
- array_nextsize (int elem, int cur, int cnt)
- {
- int ncur = cur + 1;
-
- do
- ncur <<= 1;
- while (cnt > ncur);
-
- /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
- if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
- {
- ncur *= elem;
- ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
- ncur = ncur - sizeof (void *) * 4;
- ncur /= elem;
- }
-
- return ncur;
- }
-
- ecb_noinline ecb_cold
- static void *
- array_realloc (int elem, void *base, int *cur, int cnt)
- {
- *cur = array_nextsize (elem, *cur, cnt);
- return ev_realloc (base, elem * *cur);
- }
-
- #define array_needsize_noinit(base,offset,count)
-
- #define array_needsize_zerofill(base,offset,count) \
- memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
-
- #define array_needsize(type,base,cur,cnt,init) \
- if (ecb_expect_false ((cnt) > (cur))) \
- { \
- ecb_unused int ocur_ = (cur); \
- (base) = (type *)array_realloc \
- (sizeof (type), (base), &(cur), (cnt)); \
- init ((base), ocur_, ((cur) - ocur_)); \
- }
-
- #if 0
- #define array_slim(type,stem) \
- if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
- { \
- stem ## max = array_roundsize (stem ## cnt >> 1); \
- base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
- fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
- }
- #endif
-
- #define array_free(stem, idx) \
- ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
-
- /*****************************************************************************/
-
- /* dummy callback for pending events */
- ecb_noinline
- static void
- pendingcb (EV_P_ ev_prepare *w, int revents)
- {
- }
-
- ecb_noinline
- void
- ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
- {
- W w_ = (W)w;
- int pri = ABSPRI (w_);
-
- if (ecb_expect_false (w_->pending))
- pendings [pri][w_->pending - 1].events |= revents;
- else
- {
- w_->pending = ++pendingcnt [pri];
- array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
- pendings [pri][w_->pending - 1].w = w_;
- pendings [pri][w_->pending - 1].events = revents;
- }
-
- pendingpri = NUMPRI - 1;
- }
-
- inline_speed void
- feed_reverse (EV_P_ W w)
- {
- array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
- rfeeds [rfeedcnt++] = w;
- }
-
- inline_size void
- feed_reverse_done (EV_P_ int revents)
- {
- do
- ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
- while (rfeedcnt);
- }
-
- inline_speed void
- queue_events (EV_P_ W *events, int eventcnt, int type)
- {
- int i;
-
- for (i = 0; i < eventcnt; ++i)
- ev_feed_event (EV_A_ events [i], type);
- }
-
- /*****************************************************************************/
-
- inline_speed void
- fd_event_nocheck (EV_P_ int fd, int revents)
- {
- ANFD *anfd = anfds + fd;
- ev_io *w;
-
- for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
- {
- int ev = w->events & revents;
-
- if (ev)
- ev_feed_event (EV_A_ (W)w, ev);
- }
- }
-
- /* do not submit kernel events for fds that have reify set */
- /* because that means they changed while we were polling for new events */
- inline_speed void
- fd_event (EV_P_ int fd, int revents)
- {
- ANFD *anfd = anfds + fd;
-
- if (ecb_expect_true (!anfd->reify))
- fd_event_nocheck (EV_A_ fd, revents);
- }
-
- void
- ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
- {
- if (fd >= 0 && fd < anfdmax)
- fd_event_nocheck (EV_A_ fd, revents);
- }
-
- /* make sure the external fd watch events are in-sync */
- /* with the kernel/libev internal state */
- inline_size void
- fd_reify (EV_P)
- {
- int i;
-
- /* most backends do not modify the fdchanges list in backend_modfiy.
- * except io_uring, which has fixed-size buffers which might force us
- * to handle events in backend_modify, causing fdchanges to be amended,
- * which could result in an endless loop.
- * to avoid this, we do not dynamically handle fds that were added
- * during fd_reify. that means that for those backends, fdchangecnt
- * might be non-zero during poll, which must cause them to not block.
- * to not put too much of a burden on other backends, this detail
- * needs to be handled in the backend.
- */
- int changecnt = fdchangecnt;
-
- #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
- for (i = 0; i < changecnt; ++i)
- {
- int fd = fdchanges [i];
- ANFD *anfd = anfds + fd;
-
- if (anfd->reify & EV__IOFDSET && anfd->head)
- {
- SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
-
- if (handle != anfd->handle)
- {
- unsigned long arg;
-
- assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
-
- /* handle changed, but fd didn't - we need to do it in two steps */
- backend_modify (EV_A_ fd, anfd->events, 0);
- anfd->events = 0;
- anfd->handle = handle;
- }
- }
- }
- #endif
-
- for (i = 0; i < changecnt; ++i)
- {
- int fd = fdchanges [i];
- ANFD *anfd = anfds + fd;
- ev_io *w;
-
- unsigned char o_events = anfd->events;
- unsigned char o_reify = anfd->reify;
-
- anfd->reify = 0;
-
- /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
- {
- anfd->events = 0;
-
- for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
- anfd->events |= (unsigned char)w->events;
-
- if (o_events != anfd->events)
- o_reify = EV__IOFDSET; /* actually |= */
- }
-
- if (o_reify & EV__IOFDSET)
- backend_modify (EV_A_ fd, o_events, anfd->events);
- }
-
- /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
- * this is a rare case (see beginning comment in this function), so we copy them to the
- * front and hope the backend handles this case.
- */
- if (ecb_expect_false (fdchangecnt != changecnt))
- memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
-
- fdchangecnt -= changecnt;
- }
-
- /* something about the given fd changed */
- inline_size
- void
- fd_change (EV_P_ int fd, int flags)
- {
- unsigned char reify = anfds [fd].reify;
- anfds [fd].reify = reify | flags;
-
- if (ecb_expect_true (!reify))
- {
- ++fdchangecnt;
- array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
- fdchanges [fdchangecnt - 1] = fd;
- }
- }
-
- /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
- inline_speed ecb_cold void
- fd_kill (EV_P_ int fd)
- {
- ev_io *w;
-
- while ((w = (ev_io *)anfds [fd].head))
- {
- ev_io_stop (EV_A_ w);
- ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
- }
- }
-
- /* check whether the given fd is actually valid, for error recovery */
- inline_size ecb_cold int
- fd_valid (int fd)
- {
- #ifdef _WIN32
- return EV_FD_TO_WIN32_HANDLE (fd) != -1;
- #else
- return fcntl (fd, F_GETFD) != -1;
- #endif
- }
-
- /* called on EBADF to verify fds */
- ecb_noinline ecb_cold
- static void
- fd_ebadf (EV_P)
- {
- int fd;
-
- for (fd = 0; fd < anfdmax; ++fd)
- if (anfds [fd].events)
- if (!fd_valid (fd) && errno == EBADF)
- fd_kill (EV_A_ fd);
- }
-
- /* called on ENOMEM in select/poll to kill some fds and retry */
- ecb_noinline ecb_cold
- static void
- fd_enomem (EV_P)
- {
- int fd;
-
- for (fd = anfdmax; fd--; )
- if (anfds [fd].events)
- {
- fd_kill (EV_A_ fd);
- break;
- }
- }
-
- /* usually called after fork if backend needs to re-arm all fds from scratch */
- ecb_noinline
- static void
- fd_rearm_all (EV_P)
- {
- int fd;
-
- for (fd = 0; fd < anfdmax; ++fd)
- if (anfds [fd].events)
- {
- anfds [fd].events = 0;
- anfds [fd].emask = 0;
- fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
- }
- }
-
- /* used to prepare libev internal fd's */
- /* this is not fork-safe */
- inline_speed void
- fd_intern (int fd)
- {
- #ifdef _WIN32
- unsigned long arg = 1;
- ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
- #else
- fcntl (fd, F_SETFD, FD_CLOEXEC);
- fcntl (fd, F_SETFL, O_NONBLOCK);
- #endif
- }
-
- /*****************************************************************************/
-
- /*
- * the heap functions want a real array index. array index 0 is guaranteed to not
- * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
- * the branching factor of the d-tree.
- */
-
- /*
- * at the moment we allow libev the luxury of two heaps,
- * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
- * which is more cache-efficient.
- * the difference is about 5% with 50000+ watchers.
- */
- #if EV_USE_4HEAP
-
- #define DHEAP 4
- #define HEAP0 (DHEAP - 1) /* index of first element in heap */
- #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
- #define UPHEAP_DONE(p,k) ((p) == (k))
-
- /* away from the root */
- inline_speed void
- downheap (ANHE *heap, int N, int k)
- {
- ANHE he = heap [k];
- ANHE *E = heap + N + HEAP0;
-
- for (;;)
- {
- ev_tstamp minat;
- ANHE *minpos;
- ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
-
- /* find minimum child */
- if (ecb_expect_true (pos + DHEAP - 1 < E))
- {
- /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
- if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
- if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
- if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
- }
- else if (pos < E)
- {
- /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
- if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
- if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
- if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
- }
- else
- break;
-
- if (ANHE_at (he) <= minat)
- break;
-
- heap [k] = *minpos;
- ev_active (ANHE_w (*minpos)) = k;
-
- k = minpos - heap;
- }
-
- heap [k] = he;
- ev_active (ANHE_w (he)) = k;
- }
-
- #else /* not 4HEAP */
-
- #define HEAP0 1
- #define HPARENT(k) ((k) >> 1)
- #define UPHEAP_DONE(p,k) (!(p))
-
- /* away from the root */
- inline_speed void
- downheap (ANHE *heap, int N, int k)
- {
- ANHE he = heap [k];
-
- for (;;)
- {
- int c = k << 1;
-
- if (c >= N + HEAP0)
- break;
-
- c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
- ? 1 : 0;
-
- if (ANHE_at (he) <= ANHE_at (heap [c]))
- break;
-
- heap [k] = heap [c];
- ev_active (ANHE_w (heap [k])) = k;
-
- k = c;
- }
-
- heap [k] = he;
- ev_active (ANHE_w (he)) = k;
- }
- #endif
-
- /* towards the root */
- inline_speed void
- upheap (ANHE *heap, int k)
- {
- ANHE he = heap [k];
-
- for (;;)
- {
- int p = HPARENT (k);
-
- if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
- break;
-
- heap [k] = heap [p];
- ev_active (ANHE_w (heap [k])) = k;
- k = p;
- }
-
- heap [k] = he;
- ev_active (ANHE_w (he)) = k;
- }
-
- /* move an element suitably so it is in a correct place */
- inline_size void
- adjustheap (ANHE *heap, int N, int k)
- {
- if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
- upheap (heap, k);
- else
- downheap (heap, N, k);
- }
-
- /* rebuild the heap: this function is used only once and executed rarely */
- inline_size void
- reheap (ANHE *heap, int N)
- {
- int i;
-
- /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
- /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
- for (i = 0; i < N; ++i)
- upheap (heap, i + HEAP0);
- }
-
- /*****************************************************************************/
-
- /* associate signal watchers to a signal */
- typedef struct
- {
- EV_ATOMIC_T pending;
- #if EV_MULTIPLICITY
- EV_P;
- #endif
- WL head;
- } ANSIG;
-
- static ANSIG signals [EV_NSIG - 1];
-
- /*****************************************************************************/
-
- #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
-
- ecb_noinline ecb_cold
- static void
- evpipe_init (EV_P)
- {
- if (!ev_is_active (&pipe_w))
- {
- int fds [2];
-
- # if EV_USE_EVENTFD
- fds [0] = -1;
- fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
- if (fds [1] < 0 && errno == EINVAL)
- fds [1] = eventfd (0, 0);
-
- if (fds [1] < 0)
- # endif
- {
- while (pipe (fds))
- ev_syserr ("(libev) error creating signal/async pipe");
-
- fd_intern (fds [0]);
- }
-
- evpipe [0] = fds [0];
-
- if (evpipe [1] < 0)
- evpipe [1] = fds [1]; /* first call, set write fd */
- else
- {
- /* on subsequent calls, do not change evpipe [1] */
- /* so that evpipe_write can always rely on its value. */
- /* this branch does not do anything sensible on windows, */
- /* so must not be executed on windows */
-
- dup2 (fds [1], evpipe [1]);
- close (fds [1]);
- }
-
- fd_intern (evpipe [1]);
-
- ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
- ev_io_start (EV_A_ &pipe_w);
- ev_unref (EV_A); /* watcher should not keep loop alive */
- }
- }
-
- inline_speed void
- evpipe_write (EV_P_ EV_ATOMIC_T *flag)
- {
- ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
-
- if (ecb_expect_true (*flag))
- return;
-
- *flag = 1;
- ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
-
- pipe_write_skipped = 1;
-
- ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
-
- if (pipe_write_wanted)
- {
- int old_errno;
-
- pipe_write_skipped = 0;
- ECB_MEMORY_FENCE_RELEASE;
-
- old_errno = errno; /* save errno because write will clobber it */
-
- #if EV_USE_EVENTFD
- if (evpipe [0] < 0)
- {
- uint64_t counter = 1;
- (void) !write (evpipe [1], &counter, sizeof (uint64_t));
- }
- else
- #endif
- {
- #ifdef _WIN32
- WSABUF buf;
- DWORD sent;
- buf.buf = (char *)&buf;
- buf.len = 1;
- WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
- #else
- (void) !write (evpipe [1], &(evpipe [1]), 1);
- #endif
- }
-
- errno = old_errno;
- }
- }
-
- /* called whenever the libev signal pipe */
- /* got some events (signal, async) */
- static void
- pipecb (EV_P_ ev_io *iow, int revents)
- {
- int i;
-
- if (revents & EV_READ)
- {
- #if EV_USE_EVENTFD
- if (evpipe [0] < 0)
- {
- uint64_t counter;
- (void) !read (evpipe [1], &counter, sizeof (uint64_t));
- }
- else
- #endif
- {
- char dummy[4];
- #ifdef _WIN32
- WSABUF buf;
- DWORD recvd;
- DWORD flags = 0;
- buf.buf = dummy;
- buf.len = sizeof (dummy);
- WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
- #else
- (void) !read (evpipe [0], &dummy, sizeof (dummy));
- #endif
- }
- }
-
- pipe_write_skipped = 0;
-
- ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
-
- #if EV_SIGNAL_ENABLE
- if (sig_pending)
- {
- sig_pending = 0;
-
- ECB_MEMORY_FENCE;
-
- for (i = EV_NSIG - 1; i--; )
- if (ecb_expect_false (signals [i].pending))
- ev_feed_signal_event (EV_A_ i + 1);
- }
- #endif
-
- #if EV_ASYNC_ENABLE
- if (async_pending)
- {
- async_pending = 0;
-
- ECB_MEMORY_FENCE;
-
- for (i = asynccnt; i--; )
- if (asyncs [i]->sent)
- {
- asyncs [i]->sent = 0;
- ECB_MEMORY_FENCE_RELEASE;
- ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
- }
- }
- #endif
- }
-
- /*****************************************************************************/
-
- void
- ev_feed_signal (int signum) EV_NOEXCEPT
- {
- #if EV_MULTIPLICITY
- EV_P;
- ECB_MEMORY_FENCE_ACQUIRE;
- EV_A = signals [signum - 1].loop;
-
- if (!EV_A)
- return;
- #endif
-
- signals [signum - 1].pending = 1;
- evpipe_write (EV_A_ &sig_pending);
- }
-
- static void
- ev_sighandler (int signum)
- {
- #ifdef _WIN32
- signal (signum, ev_sighandler);
- #endif
-
- ev_feed_signal (signum);
- }
-
- ecb_noinline
- void
- ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
- {
- WL w;
-
- if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
- return;
-
- --signum;
-
- #if EV_MULTIPLICITY
- /* it is permissible to try to feed a signal to the wrong loop */
- /* or, likely more useful, feeding a signal nobody is waiting for */
-
- if (ecb_expect_false (signals [signum].loop != EV_A))
- return;
- #endif
-
- signals [signum].pending = 0;
- ECB_MEMORY_FENCE_RELEASE;
-
- for (w = signals [signum].head; w; w = w->next)
- ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
- }
-
- #if EV_USE_SIGNALFD
- static void
- sigfdcb (EV_P_ ev_io *iow, int revents)
- {
- struct signalfd_siginfo si[2], *sip; /* these structs are big */
-
- for (;;)
- {
- ssize_t res = read (sigfd, si, sizeof (si));
-
- /* not ISO-C, as res might be -1, but works with SuS */
- for (sip = si; (char *)sip < (char *)si + res; ++sip)
- ev_feed_signal_event (EV_A_ sip->ssi_signo);
-
- if (res < (ssize_t)sizeof (si))
- break;
- }
- }
- #endif
-
- #endif
-
- /*****************************************************************************/
-
- #if EV_CHILD_ENABLE
- static WL childs [EV_PID_HASHSIZE];
-
- static ev_signal childev;
-
- #ifndef WIFCONTINUED
- # define WIFCONTINUED(status) 0
- #endif
-
- /* handle a single child status event */
- inline_speed void
- child_reap (EV_P_ int chain, int pid, int status)
- {
- ev_child *w;
- int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
-
- for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
- {
- if ((w->pid == pid || !w->pid)
- && (!traced || (w->flags & 1)))
- {
- ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
- w->rpid = pid;
- w->rstatus = status;
- ev_feed_event (EV_A_ (W)w, EV_CHILD);
- }
- }
- }
-
- #ifndef WCONTINUED
- # define WCONTINUED 0
- #endif
-
- /* called on sigchld etc., calls waitpid */
- static void
- childcb (EV_P_ ev_signal *sw, int revents)
- {
- int pid, status;
-
- /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
- if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
- if (!WCONTINUED
- || errno != EINVAL
- || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
- return;
-
- /* make sure we are called again until all children have been reaped */
- /* we need to do it this way so that the callback gets called before we continue */
- ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
-
- child_reap (EV_A_ pid, pid, status);
- if ((EV_PID_HASHSIZE) > 1)
- child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
- }
-
- #endif
-
- /*****************************************************************************/
-
- #if EV_USE_TIMERFD
-
- static void periodics_reschedule (EV_P);
-
- static void
- timerfdcb (EV_P_ ev_io *iow, int revents)
- {
- struct itimerspec its = { 0 };
-
- its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
- timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
-
- ev_rt_now = ev_time ();
- /* periodics_reschedule only needs ev_rt_now */
- /* but maybe in the future we want the full treatment. */
- /*
- now_floor = EV_TS_CONST (0.);
- time_update (EV_A_ EV_TSTAMP_HUGE);
- */
- #if EV_PERIODIC_ENABLE
- periodics_reschedule (EV_A);
- #endif
- }
-
- ecb_noinline ecb_cold
- static void
- evtimerfd_init (EV_P)
- {
- if (!ev_is_active (&timerfd_w))
- {
- timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
-
- if (timerfd >= 0)
- {
- fd_intern (timerfd); /* just to be sure */
-
- ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
- ev_set_priority (&timerfd_w, EV_MINPRI);
- ev_io_start (EV_A_ &timerfd_w);
- ev_unref (EV_A); /* watcher should not keep loop alive */
-
- /* (re-) arm timer */
- timerfdcb (EV_A_ 0, 0);
- }
- }
- }
-
- #endif
-
- /*****************************************************************************/
-
- #if EV_USE_IOCP
- # include "ev_iocp.c"
- #endif
- #if EV_USE_PORT
- # include "ev_port.c"
- #endif
- #if EV_USE_KQUEUE
- # include "ev_kqueue.c"
- #endif
- #if EV_USE_EPOLL
- # include "ev_epoll.c"
- #endif
- #if EV_USE_LINUXAIO
- # include "ev_linuxaio.c"
- #endif
- #if EV_USE_IOURING
- # include "ev_iouring.c"
- #endif
- #if EV_USE_POLL
- # include "ev_poll.c"
- #endif
- #if EV_USE_SELECT
- # include "ev_select.c"
- #endif
-
- ecb_cold int
- ev_version_major (void) EV_NOEXCEPT
- {
- return EV_VERSION_MAJOR;
- }
-
- ecb_cold int
- ev_version_minor (void) EV_NOEXCEPT
- {
- return EV_VERSION_MINOR;
- }
-
- /* return true if we are running with elevated privileges and should ignore env variables */
- inline_size ecb_cold int
- enable_secure (void)
- {
- #ifdef _WIN32
- return 0;
- #else
- return getuid () != geteuid ()
- || getgid () != getegid ();
- #endif
- }
-
- ecb_cold
- unsigned int
- ev_supported_backends (void) EV_NOEXCEPT
- {
- unsigned int flags = 0;
-
- if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
- if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
- if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
- if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
- if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
- if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
- if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
-
- return flags;
- }
-
- ecb_cold
- unsigned int
- ev_recommended_backends (void) EV_NOEXCEPT
- {
- unsigned int flags = ev_supported_backends ();
-
- #ifndef __NetBSD__
- /* kqueue is borked on everything but netbsd apparently */
- /* it usually doesn't work correctly on anything but sockets and pipes */
- flags &= ~EVBACKEND_KQUEUE;
- #endif
- #ifdef __APPLE__
- /* only select works correctly on that "unix-certified" platform */
- flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
- flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
- #endif
- #ifdef __FreeBSD__
- flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
- #endif
-
- /* TODO: linuxaio is very experimental */
- #if !EV_RECOMMEND_LINUXAIO
- flags &= ~EVBACKEND_LINUXAIO;
- #endif
- /* TODO: linuxaio is super experimental */
- #if !EV_RECOMMEND_IOURING
- flags &= ~EVBACKEND_IOURING;
- #endif
-
- return flags;
- }
-
- ecb_cold
- unsigned int
- ev_embeddable_backends (void) EV_NOEXCEPT
- {
- int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
-
- /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
- if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
- flags &= ~EVBACKEND_EPOLL;
-
- /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
-
- return flags;
- }
-
- unsigned int
- ev_backend (EV_P) EV_NOEXCEPT
- {
- return backend;
- }
-
- #if EV_FEATURE_API
- unsigned int
- ev_iteration (EV_P) EV_NOEXCEPT
- {
- return loop_count;
- }
-
- unsigned int
- ev_depth (EV_P) EV_NOEXCEPT
- {
- return loop_depth;
- }
-
- void
- ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
- {
- io_blocktime = interval;
- }
-
- void
- ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
- {
- timeout_blocktime = interval;
- }
-
- void
- ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
- {
- userdata = data;
- }
-
- void *
- ev_userdata (EV_P) EV_NOEXCEPT
- {
- return userdata;
- }
-
- void
- ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
- {
- invoke_cb = invoke_pending_cb;
- }
-
- void
- ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
- {
- release_cb = release;
- acquire_cb = acquire;
- }
- #endif
-
- /* initialise a loop structure, must be zero-initialised */
- ecb_noinline ecb_cold
- static void
- loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
- {
- if (!backend)
- {
- origflags = flags;
-
- #if EV_USE_REALTIME
- if (!have_realtime)
- {
- struct timespec ts;
-
- if (!clock_gettime (CLOCK_REALTIME, &ts))
- have_realtime = 1;
- }
- #endif
-
- #if EV_USE_MONOTONIC
- if (!have_monotonic)
- {
- struct timespec ts;
-
- if (!clock_gettime (CLOCK_MONOTONIC, &ts)) {
- have_monotonic = 1;
- monotonic_clock_id = CLOCK_MONOTONIC;
- #define CHECK_CLOCK_SOURCE(id) do { \
- if (!clock_gettime ((id), &ts) && \
- !clock_getres ((id), &ts)) { \
- if (ts.tv_sec == 0 && ts.tv_nsec < 10ULL * 1000000) { \
- monotonic_clock_id = (id); \
- have_cheap_timer = 1; \
- } \
- } \
- } while(0)
- #ifdef CLOCK_MONOTONIC_COARSE
- CHECK_CLOCK_SOURCE(CLOCK_MONOTONIC_COARSE);
- #elif defined(CLOCK_MONOTONIC_FAST) /* BSD stuff */
- CHECK_CLOCK_SOURCE(CLOCK_MONOTONIC_FAST);
- #elif defined(CLOCK_MONOTONIC_RAW_APPROX) /* OSX stuff */
- CHECK_CLOCK_SOURCE(CLOCK_MONOTONIC_RAW_APPROX);
- #endif
- #undef CHECK_CLOCK_SOURCE
- }
- }
- #endif
-
- /* pid check not overridable via env */
- #ifndef _WIN32
- if (flags & EVFLAG_FORKCHECK)
- curpid = getpid ();
- #endif
-
- if (!(flags & EVFLAG_NOENV)
- && !enable_secure ()
- && getenv ("LIBEV_FLAGS"))
- flags = atoi (getenv ("LIBEV_FLAGS"));
-
- ev_rt_now = ev_time ();
- mn_now = get_clock ();
- now_floor = mn_now;
- rtmn_diff = ev_rt_now - mn_now;
- #if EV_FEATURE_API
- invoke_cb = ev_invoke_pending;
- #endif
-
- io_blocktime = 0.;
- timeout_blocktime = 0.;
- backend = 0;
- backend_fd = -1;
- sig_pending = 0;
- #if EV_ASYNC_ENABLE
- async_pending = 0;
- #endif
- pipe_write_skipped = 0;
- pipe_write_wanted = 0;
- evpipe [0] = -1;
- evpipe [1] = -1;
- #if EV_USE_INOTIFY
- fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
- #endif
- #if EV_USE_SIGNALFD
- sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
- #endif
- #if EV_USE_TIMERFD
- timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
- #endif
-
- if (!(flags & EVBACKEND_MASK))
- flags |= ev_recommended_backends ();
-
- #if EV_USE_IOCP
- if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
- #endif
- #if EV_USE_PORT
- if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
- #endif
- #if EV_USE_KQUEUE
- if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
- #endif
- #if EV_USE_IOURING
- if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
- #endif
- #if EV_USE_LINUXAIO
- if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
- #endif
- #if EV_USE_EPOLL
- if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
- #endif
- #if EV_USE_POLL
- if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
- #endif
- #if EV_USE_SELECT
- if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
- #endif
-
- ev_prepare_init (&pending_w, pendingcb);
-
- #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
- ev_init (&pipe_w, pipecb);
- ev_set_priority (&pipe_w, EV_MAXPRI);
- #endif
- }
- }
-
- EV_INLINE struct ev_loop *
- ev_default_loop_uc_ (void) EV_NOEXCEPT
- {
- return ev_default_loop_ptr;
- }
-
- EV_INLINE int
- ev_is_default_loop (EV_P) EV_NOEXCEPT
- {
- return EV_A == EV_DEFAULT_UC;
- }
-
- /* free up a loop structure */
- ecb_cold
- void
- ev_loop_destroy (EV_P)
- {
- int i;
-
- #if EV_MULTIPLICITY
- /* mimic free (0) */
- if (!EV_A)
- return;
- #endif
-
- #if EV_CLEANUP_ENABLE
- /* queue cleanup watchers (and execute them) */
- if (ecb_expect_false (cleanupcnt))
- {
- queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
- EV_INVOKE_PENDING;
- }
- #endif
-
- #if EV_CHILD_ENABLE
- if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
- {
- ev_ref (EV_A); /* child watcher */
- ev_signal_stop (EV_A_ &childev);
- }
- #endif
-
- if (ev_is_active (&pipe_w))
- {
- /*ev_ref (EV_A);*/
- /*ev_io_stop (EV_A_ &pipe_w);*/
-
- if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
- if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
- }
-
- #if EV_USE_SIGNALFD
- if (ev_is_active (&sigfd_w))
- close (sigfd);
- #endif
-
- #if EV_USE_TIMERFD
- if (ev_is_active (&timerfd_w))
- close (timerfd);
- #endif
-
- #if EV_USE_INOTIFY
- if (fs_fd >= 0)
- close (fs_fd);
- #endif
-
- if (backend_fd >= 0)
- close (backend_fd);
-
- #if EV_USE_IOCP
- if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
- #endif
- #if EV_USE_PORT
- if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
- #endif
- #if EV_USE_KQUEUE
- if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
- #endif
- #if EV_USE_IOURING
- if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
- #endif
- #if EV_USE_LINUXAIO
- if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
- #endif
- #if EV_USE_EPOLL
- if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
- #endif
- #if EV_USE_POLL
- if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
- #endif
- #if EV_USE_SELECT
- if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
- #endif
-
- for (i = NUMPRI; i--; )
- {
- array_free (pending, [i]);
- #if EV_IDLE_ENABLE
- array_free (idle, [i]);
- #endif
- }
-
- ev_free (anfds); anfds = 0; anfdmax = 0;
-
- /* have to use the microsoft-never-gets-it-right macro */
- array_free (rfeed, EMPTY);
- array_free (fdchange, EMPTY);
- array_free (timer, EMPTY);
- #if EV_PERIODIC_ENABLE
- array_free (periodic, EMPTY);
- #endif
- #if EV_FORK_ENABLE
- array_free (fork, EMPTY);
- #endif
- #if EV_CLEANUP_ENABLE
- array_free (cleanup, EMPTY);
- #endif
- array_free (prepare, EMPTY);
- array_free (check, EMPTY);
- #if EV_ASYNC_ENABLE
- array_free (async, EMPTY);
- #endif
-
- backend = 0;
-
- #if EV_MULTIPLICITY
- if (ev_is_default_loop (EV_A))
- #endif
- ev_default_loop_ptr = 0;
- #if EV_MULTIPLICITY
- else
- ev_free (EV_A);
- #endif
- }
-
- #if EV_USE_INOTIFY
- inline_size void infy_fork (EV_P);
- #endif
-
- inline_size void
- loop_fork (EV_P)
- {
- #if EV_USE_PORT
- if (backend == EVBACKEND_PORT ) port_fork (EV_A);
- #endif
- #if EV_USE_KQUEUE
- if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
- #endif
- #if EV_USE_IOURING
- if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
- #endif
- #if EV_USE_LINUXAIO
- if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
- #endif
- #if EV_USE_EPOLL
- if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
- #endif
- #if EV_USE_INOTIFY
- infy_fork (EV_A);
- #endif
-
- if (postfork != 2)
- {
- #if EV_USE_SIGNALFD
- /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
- #endif
-
- #if EV_USE_TIMERFD
- if (ev_is_active (&timerfd_w))
- {
- ev_ref (EV_A);
- ev_io_stop (EV_A_ &timerfd_w);
-
- close (timerfd);
- timerfd = -2;
-
- evtimerfd_init (EV_A);
- /* reschedule periodics, in case we missed something */
- ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
- }
- #endif
-
- #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
- if (ev_is_active (&pipe_w))
- {
- /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
-
- ev_ref (EV_A);
- ev_io_stop (EV_A_ &pipe_w);
-
- if (evpipe [0] >= 0)
- EV_WIN32_CLOSE_FD (evpipe [0]);
-
- evpipe_init (EV_A);
- /* iterate over everything, in case we missed something before */
- ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
- }
- #endif
- }
-
- postfork = 0;
- }
-
- #if EV_MULTIPLICITY
-
- ecb_cold
- struct ev_loop *
- ev_loop_new (unsigned int flags) EV_NOEXCEPT
- {
- EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
-
- memset (EV_A, 0, sizeof (struct ev_loop));
- loop_init (EV_A_ flags);
-
- if (ev_backend (EV_A))
- return EV_A;
-
- ev_free (EV_A);
- return 0;
- }
-
- #endif /* multiplicity */
-
- #if EV_VERIFY
- ecb_noinline ecb_cold
- static void
- verify_watcher (EV_P_ W w)
- {
- assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
-
- if (w->pending)
- assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
- }
-
- ecb_noinline ecb_cold
- static void
- verify_heap (EV_P_ ANHE *heap, int N)
- {
- int i;
-
- for (i = HEAP0; i < N + HEAP0; ++i)
- {
- assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
- assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
- assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
-
- verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
- }
- }
-
- ecb_noinline ecb_cold
- static void
- array_verify (EV_P_ W *ws, int cnt)
- {
- while (cnt--)
- {
- assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
- verify_watcher (EV_A_ ws [cnt]);
- }
- }
- #endif
-
- #if EV_FEATURE_API
- void ecb_cold
- ev_verify (EV_P) EV_NOEXCEPT
- {
- #if EV_VERIFY
- int i;
- WL w, w2;
-
- assert (activecnt >= -1);
-
- assert (fdchangemax >= fdchangecnt);
- for (i = 0; i < fdchangecnt; ++i)
- assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
-
- assert (anfdmax >= 0);
- for (i = 0; i < anfdmax; ++i)
- {
- int j = 0;
-
- for (w = w2 = anfds [i].head; w; w = w->next)
- {
- verify_watcher (EV_A_ (W)w);
-
- if (j++ & 1)
- {
- assert (("libev: io watcher list contains a loop", w != w2));
- w2 = w2->next;
- }
-
- assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
- assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
- }
- }
-
- assert (timermax >= timercnt);
- verify_heap (EV_A_ timers, timercnt);
-
- #if EV_PERIODIC_ENABLE
- assert (periodicmax >= periodiccnt);
- verify_heap (EV_A_ periodics, periodiccnt);
- #endif
-
- for (i = NUMPRI; i--; )
- {
- assert (pendingmax [i] >= pendingcnt [i]);
- #if EV_IDLE_ENABLE
- assert (idleall >= 0);
- assert (idlemax [i] >= idlecnt [i]);
- array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
- #endif
- }
-
- #if EV_FORK_ENABLE
- assert (forkmax >= forkcnt);
- array_verify (EV_A_ (W *)forks, forkcnt);
- #endif
-
- #if EV_CLEANUP_ENABLE
- assert (cleanupmax >= cleanupcnt);
- array_verify (EV_A_ (W *)cleanups, cleanupcnt);
- #endif
-
- #if EV_ASYNC_ENABLE
- assert (asyncmax >= asynccnt);
- array_verify (EV_A_ (W *)asyncs, asynccnt);
- #endif
-
- #if EV_PREPARE_ENABLE
- assert (preparemax >= preparecnt);
- array_verify (EV_A_ (W *)prepares, preparecnt);
- #endif
-
- #if EV_CHECK_ENABLE
- assert (checkmax >= checkcnt);
- array_verify (EV_A_ (W *)checks, checkcnt);
- #endif
-
- # if 0
- #if EV_CHILD_ENABLE
- for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
- for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
- #endif
- # endif
- #endif
- }
- #endif
-
- #if EV_MULTIPLICITY
- ecb_cold
- struct ev_loop *
- #else
- int
- #endif
- ev_default_loop (unsigned int flags) EV_NOEXCEPT
- {
- if (!ev_default_loop_ptr)
- {
- #if EV_MULTIPLICITY
- EV_P = ev_default_loop_ptr = &default_loop_struct;
- #else
- ev_default_loop_ptr = 1;
- #endif
-
- loop_init (EV_A_ flags);
-
- if (ev_backend (EV_A))
- {
- #if EV_CHILD_ENABLE
- ev_signal_init (&childev, childcb, SIGCHLD);
- ev_set_priority (&childev, EV_MAXPRI);
- ev_signal_start (EV_A_ &childev);
- ev_unref (EV_A); /* child watcher should not keep loop alive */
- #endif
- }
- else
- ev_default_loop_ptr = 0;
- }
-
- return ev_default_loop_ptr;
- }
-
- void
- ev_loop_fork (EV_P) EV_NOEXCEPT
- {
- postfork = 1;
- }
-
- /*****************************************************************************/
-
- void
- ev_invoke (EV_P_ void *w, int revents)
- {
- EV_CB_INVOKE ((W)w, revents);
- }
-
- unsigned int
- ev_pending_count (EV_P) EV_NOEXCEPT
- {
- int pri;
- unsigned int count = 0;
-
- for (pri = NUMPRI; pri--; )
- count += pendingcnt [pri];
-
- return count;
- }
-
- ecb_noinline
- void
- ev_invoke_pending (EV_P)
- {
- pendingpri = NUMPRI;
-
- do
- {
- --pendingpri;
-
- /* pendingpri possibly gets modified in the inner loop */
- while (pendingcnt [pendingpri])
- {
- ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
-
- p->w->pending = 0;
- EV_CB_INVOKE (p->w, p->events);
- EV_FREQUENT_CHECK;
- }
- }
- while (pendingpri);
- }
-
- #if EV_IDLE_ENABLE
- /* make idle watchers pending. this handles the "call-idle */
- /* only when higher priorities are idle" logic */
- inline_size void
- idle_reify (EV_P)
- {
- if (ecb_expect_false (idleall))
- {
- int pri;
-
- for (pri = NUMPRI; pri--; )
- {
- if (pendingcnt [pri])
- break;
-
- if (idlecnt [pri])
- {
- queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
- break;
- }
- }
- }
- }
- #endif
-
- /* make timers pending */
- inline_size void
- timers_reify (EV_P)
- {
- EV_FREQUENT_CHECK;
-
- if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
- {
- do
- {
- ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
-
- /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
-
- /* first reschedule or stop timer */
- if (w->repeat)
- {
- ev_at (w) += w->repeat;
- if (ev_at (w) < mn_now)
- ev_at (w) = mn_now;
-
- assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
-
- ANHE_at_cache (timers [HEAP0]);
- downheap (timers, timercnt, HEAP0);
- }
- else
- ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
-
- EV_FREQUENT_CHECK;
- feed_reverse (EV_A_ (W)w);
- }
- while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
-
- feed_reverse_done (EV_A_ EV_TIMER);
- }
- }
-
- #if EV_PERIODIC_ENABLE
-
- ecb_noinline
- static void
- periodic_recalc (EV_P_ ev_periodic *w)
- {
- ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
- ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
-
- /* the above almost always errs on the low side */
- while (at <= ev_rt_now)
- {
- ev_tstamp nat = at + w->interval;
-
- /* when resolution fails us, we use ev_rt_now */
- if (ecb_expect_false (nat == at))
- {
- at = ev_rt_now;
- break;
- }
-
- at = nat;
- }
-
- ev_at (w) = at;
- }
-
- /* make periodics pending */
- inline_size void
- periodics_reify (EV_P)
- {
- EV_FREQUENT_CHECK;
-
- while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
- {
- do
- {
- ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
-
- /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
-
- /* first reschedule or stop timer */
- if (w->reschedule_cb)
- {
- ev_at (w) = w->reschedule_cb (w, ev_rt_now);
-
- assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
-
- ANHE_at_cache (periodics [HEAP0]);
- downheap (periodics, periodiccnt, HEAP0);
- }
- else if (w->interval)
- {
- periodic_recalc (EV_A_ w);
- ANHE_at_cache (periodics [HEAP0]);
- downheap (periodics, periodiccnt, HEAP0);
- }
- else
- ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
-
- EV_FREQUENT_CHECK;
- feed_reverse (EV_A_ (W)w);
- }
- while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
-
- feed_reverse_done (EV_A_ EV_PERIODIC);
- }
- }
-
- /* simply recalculate all periodics */
- /* TODO: maybe ensure that at least one event happens when jumping forward? */
- ecb_noinline ecb_cold
- static void
- periodics_reschedule (EV_P)
- {
- int i;
-
- /* adjust periodics after time jump */
- for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
- {
- ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
-
- if (w->reschedule_cb)
- ev_at (w) = w->reschedule_cb (w, ev_rt_now);
- else if (w->interval)
- periodic_recalc (EV_A_ w);
-
- ANHE_at_cache (periodics [i]);
- }
-
- reheap (periodics, periodiccnt);
- }
- #endif
-
- /* adjust all timers by a given offset */
- ecb_noinline ecb_cold
- static void
- timers_reschedule (EV_P_ ev_tstamp adjust)
- {
- int i;
-
- for (i = 0; i < timercnt; ++i)
- {
- ANHE *he = timers + i + HEAP0;
- ANHE_w (*he)->at += adjust;
- ANHE_at_cache (*he);
- }
- }
-
- /* fetch new monotonic and realtime times from the kernel */
- /* also detect if there was a timejump, and act accordingly */
- inline_speed void
- time_update (EV_P_ ev_tstamp max_block)
- {
- #if EV_USE_MONOTONIC
- if (ecb_expect_true (have_monotonic))
- {
- int i;
- ev_tstamp odiff = rtmn_diff;
-
- mn_now = get_clock ();
-
- /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
- /* interpolate in the meantime */
- if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
- {
- ev_rt_now = rtmn_diff + mn_now;
- return;
- }
-
- now_floor = mn_now;
- ev_rt_now = ev_time ();
-
- /* loop a few times, before making important decisions.
- * on the choice of "4": one iteration isn't enough,
- * in case we get preempted during the calls to
- * ev_time and get_clock. a second call is almost guaranteed
- * to succeed in that case, though. and looping a few more times
- * doesn't hurt either as we only do this on time-jumps or
- * in the unlikely event of having been preempted here.
- */
- for (i = 4; --i; )
- {
- ev_tstamp diff;
- rtmn_diff = ev_rt_now - mn_now;
-
- diff = odiff - rtmn_diff;
-
- if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
- return; /* all is well */
-
- ev_rt_now = ev_time ();
- mn_now = get_clock ();
- now_floor = mn_now;
- }
-
- /* no timer adjustment, as the monotonic clock doesn't jump */
- /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
- # if EV_PERIODIC_ENABLE
- periodics_reschedule (EV_A);
- # endif
- }
- else
- #endif
- {
- ev_rt_now = ev_time ();
-
- if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
- {
- /* adjust timers. this is easy, as the offset is the same for all of them */
- timers_reschedule (EV_A_ ev_rt_now - mn_now);
- #if EV_PERIODIC_ENABLE
- periodics_reschedule (EV_A);
- #endif
- }
-
- mn_now = ev_rt_now;
- }
- }
-
- int
- ev_run (EV_P_ int flags)
- {
- #if EV_FEATURE_API
- ++loop_depth;
- #endif
-
- assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
-
- loop_done = EVBREAK_CANCEL;
-
- EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
-
- do
- {
- #if EV_VERIFY >= 2
- ev_verify (EV_A);
- #endif
-
- #ifndef _WIN32
- if (ecb_expect_false (curpid)) /* penalise the forking check even more */
- if (ecb_expect_false (getpid () != curpid))
- {
- curpid = getpid ();
- postfork = 1;
- }
- #endif
-
- #if EV_FORK_ENABLE
- /* we might have forked, so queue fork handlers */
- if (ecb_expect_false (postfork))
- if (forkcnt)
- {
- queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
- EV_INVOKE_PENDING;
- }
- #endif
-
- #if EV_PREPARE_ENABLE
- /* queue prepare watchers (and execute them) */
- if (ecb_expect_false (preparecnt))
- {
- queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
- EV_INVOKE_PENDING;
- }
- #endif
-
- if (ecb_expect_false (loop_done))
- break;
-
- /* we might have forked, so reify kernel state if necessary */
- if (ecb_expect_false (postfork))
- loop_fork (EV_A);
-
- /* update fd-related kernel structures */
- fd_reify (EV_A);
-
- /* calculate blocking time */
- {
- ev_tstamp waittime = 0.;
- ev_tstamp sleeptime = 0.;
-
- /* remember old timestamp for io_blocktime calculation */
- ev_tstamp prev_mn_now = mn_now;
-
- /* update time to cancel out callback processing overhead */
- time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
-
- /* from now on, we want a pipe-wake-up */
- pipe_write_wanted = 1;
-
- ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
-
- if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
- {
- waittime = EV_TS_CONST (MAX_BLOCKTIME);
- #if EV_USE_MONOTONIC
- if (ecb_expect_true (have_monotonic)) {
- #if EV_USE_TIMERFD
- /* sleep a lot longer when we can reliably detect timejumps */
- if (ecb_expect_true (timerfd != -1))
- waittime = EV_TS_CONST (MAX_BLOCKTIME2);
- #endif
- #if !EV_PERIODIC_ENABLE
- /* without periodics but with monotonic clock there is no need */
- /* for any time jump detection, so sleep longer */
-
- waittime = EV_TS_CONST (MAX_BLOCKTIME2);
- #endif
- }
- #endif /* EV_USE_MONOTONIC */
- if (timercnt)
- {
- ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
- if (waittime > to) waittime = to;
- }
-
- #if EV_PERIODIC_ENABLE
- if (periodiccnt)
- {
- ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
- if (waittime > to) waittime = to;
- }
- #endif
-
- /* don't let timeouts decrease the waittime below timeout_blocktime */
- if (ecb_expect_false (waittime < timeout_blocktime))
- waittime = timeout_blocktime;
-
- /* now there are two more special cases left, either we have
- * already-expired timers, so we should not sleep, or we have timers
- * that expire very soon, in which case we need to wait for a minimum
- * amount of time for some event loop backends.
- */
- if (ecb_expect_false (waittime < backend_mintime))
- waittime = waittime <= EV_TS_CONST (0.)
- ? EV_TS_CONST (0.)
- : backend_mintime;
-
- /* extra check because io_blocktime is commonly 0 */
- if (ecb_expect_false (io_blocktime))
- {
- sleeptime = io_blocktime - (mn_now - prev_mn_now);
-
- if (sleeptime > waittime - backend_mintime)
- sleeptime = waittime - backend_mintime;
-
- if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
- {
- ev_sleep (sleeptime);
- waittime -= sleeptime;
- }
- }
- }
-
- #if EV_FEATURE_API
- ++loop_count;
- #endif
- assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
- backend_poll (EV_A_ waittime);
- assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
-
- pipe_write_wanted = 0; /* just an optimisation, no fence needed */
-
- ECB_MEMORY_FENCE_ACQUIRE;
- if (pipe_write_skipped)
- {
- assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
- ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
- }
-
- /* update ev_rt_now, do magic */
- time_update (EV_A_ waittime + sleeptime);
- }
-
- /* queue pending timers and reschedule them */
- timers_reify (EV_A); /* relative timers called last */
- #if EV_PERIODIC_ENABLE
- periodics_reify (EV_A); /* absolute timers called first */
- #endif
-
- #if EV_IDLE_ENABLE
- /* queue idle watchers unless other events are pending */
- idle_reify (EV_A);
- #endif
-
- #if EV_CHECK_ENABLE
- /* queue check watchers, to be executed first */
- if (ecb_expect_false (checkcnt))
- queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
- #endif
-
- EV_INVOKE_PENDING;
- }
- while (ecb_expect_true (
- activecnt
- && !loop_done
- && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
- ));
-
- if (loop_done == EVBREAK_ONE)
- loop_done = EVBREAK_CANCEL;
-
- #if EV_FEATURE_API
- --loop_depth;
- #endif
-
- return activecnt;
- }
-
- void
- ev_break (EV_P_ int how) EV_NOEXCEPT
- {
- loop_done = how;
- }
-
- void
- ev_ref (EV_P) EV_NOEXCEPT
- {
- ++activecnt;
- }
-
- void
- ev_unref (EV_P) EV_NOEXCEPT
- {
- --activecnt;
- }
-
- void
- ev_now_update (EV_P) EV_NOEXCEPT
- {
- time_update (EV_A_ EV_TSTAMP_HUGE);
- }
-
- void
- ev_suspend (EV_P) EV_NOEXCEPT
- {
- ev_now_update (EV_A);
- }
-
- void
- ev_resume (EV_P) EV_NOEXCEPT
- {
- ev_tstamp mn_prev = mn_now;
-
- ev_now_update (EV_A);
- timers_reschedule (EV_A_ mn_now - mn_prev);
- #if EV_PERIODIC_ENABLE
- /* TODO: really do this? */
- periodics_reschedule (EV_A);
- #endif
- }
-
- /*****************************************************************************/
- /* singly-linked list management, used when the expected list length is short */
-
- inline_size void
- wlist_add (WL *head, WL elem)
- {
- elem->next = *head;
- *head = elem;
- }
-
- inline_size void
- wlist_del (WL *head, WL elem)
- {
- while (*head)
- {
- if (ecb_expect_true (*head == elem))
- {
- *head = elem->next;
- break;
- }
-
- head = &(*head)->next;
- }
- }
-
- /* internal, faster, version of ev_clear_pending */
- inline_speed void
- clear_pending (EV_P_ W w)
- {
- if (w->pending)
- {
- pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
- w->pending = 0;
- }
- }
-
- int
- ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
- {
- W w_ = (W)w;
- int pending = w_->pending;
-
- if (ecb_expect_true (pending))
- {
- ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
- p->w = (W)&pending_w;
- w_->pending = 0;
- return p->events;
- }
- else
- return 0;
- }
-
- inline_size void
- pri_adjust (EV_P_ W w)
- {
- int pri = ev_priority (w);
- pri = pri < EV_MINPRI ? EV_MINPRI : pri;
- pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
- ev_set_priority (w, pri);
- }
-
- inline_speed void
- ev_start (EV_P_ W w, int active)
- {
- pri_adjust (EV_A_ w);
- w->active = active;
- ev_ref (EV_A);
- }
-
- inline_size void
- ev_stop (EV_P_ W w)
- {
- ev_unref (EV_A);
- w->active = 0;
- }
-
- /*****************************************************************************/
-
- ecb_noinline
- void
- ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
- {
- int fd = w->fd;
-
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- assert (("libev: ev_io_start called with negative fd", fd >= 0));
- assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
-
- #if EV_VERIFY >= 2
- assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
- #endif
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, 1);
- array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
- wlist_add (&anfds[fd].head, (WL)w);
-
- /* common bug, apparently */
- assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
-
- fd_change (EV_A_ fd, (w->events & EV__IOFDSET) | EV_ANFD_REIFY);
- w->events &= ~EV__IOFDSET;
-
- EV_FREQUENT_CHECK;
- }
-
- ecb_noinline
- void
- ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
-
- #if EV_VERIFY >= 2
- assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
- #endif
- EV_FREQUENT_CHECK;
-
- wlist_del (&anfds[w->fd].head, (WL)w);
- ev_stop (EV_A_ (W)w);
-
- fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
-
- EV_FREQUENT_CHECK;
- }
-
- ecb_noinline
- void
- ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- ev_at (w) += mn_now;
-
- assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
-
- EV_FREQUENT_CHECK;
-
- ++timercnt;
- ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
- array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
- ANHE_w (timers [ev_active (w)]) = (WT)w;
- ANHE_at_cache (timers [ev_active (w)]);
- upheap (timers, ev_active (w));
-
- EV_FREQUENT_CHECK;
-
- /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
- }
-
- ecb_noinline
- void
- ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
-
- --timercnt;
-
- if (ecb_expect_true (active < timercnt + HEAP0))
- {
- timers [active] = timers [timercnt + HEAP0];
- adjustheap (timers, timercnt, active);
- }
- }
-
- ev_at (w) -= mn_now;
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
-
- ecb_noinline
- void
- ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
- {
- EV_FREQUENT_CHECK;
-
- clear_pending (EV_A_ (W)w);
-
- if (ev_is_active (w))
- {
- if (w->repeat)
- {
- ev_at (w) = mn_now + w->repeat;
- ANHE_at_cache (timers [ev_active (w)]);
- adjustheap (timers, timercnt, ev_active (w));
- }
- else
- ev_timer_stop (EV_A_ w);
- }
- else if (w->repeat)
- {
- ev_at (w) = w->repeat;
- ev_timer_start (EV_A_ w);
- }
-
- EV_FREQUENT_CHECK;
- }
-
- ev_tstamp
- ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
- {
- return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
- }
-
- #if EV_PERIODIC_ENABLE
- ecb_noinline
- void
- ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- #if EV_USE_TIMERFD
- if (timerfd == -2)
- evtimerfd_init (EV_A);
- #endif
-
- if (w->reschedule_cb)
- ev_at (w) = w->reschedule_cb (w, ev_rt_now);
- else if (w->interval)
- {
- assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
- periodic_recalc (EV_A_ w);
- }
- else
- ev_at (w) = w->offset;
-
- EV_FREQUENT_CHECK;
-
- ++periodiccnt;
- ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
- array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
- ANHE_w (periodics [ev_active (w)]) = (WT)w;
- ANHE_at_cache (periodics [ev_active (w)]);
- upheap (periodics, ev_active (w));
-
- EV_FREQUENT_CHECK;
-
- /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
- }
-
- ecb_noinline
- void
- ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
-
- --periodiccnt;
-
- if (ecb_expect_true (active < periodiccnt + HEAP0))
- {
- periodics [active] = periodics [periodiccnt + HEAP0];
- adjustheap (periodics, periodiccnt, active);
- }
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
-
- ecb_noinline
- void
- ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
- {
- /* TODO: use adjustheap and recalculation */
- ev_periodic_stop (EV_A_ w);
- ev_periodic_start (EV_A_ w);
- }
- #endif
-
- #ifndef SA_RESTART
- # define SA_RESTART 0
- #endif
-
- #if EV_SIGNAL_ENABLE
-
- ecb_noinline
- void
- ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
-
- #if EV_MULTIPLICITY
- assert (("libev: a signal must not be attached to two different loops",
- !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
-
- signals [w->signum - 1].loop = EV_A;
- ECB_MEMORY_FENCE_RELEASE;
- #endif
-
- EV_FREQUENT_CHECK;
-
- #if EV_USE_SIGNALFD
- if (sigfd == -2)
- {
- sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
- if (sigfd < 0 && errno == EINVAL)
- sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
-
- if (sigfd >= 0)
- {
- fd_intern (sigfd); /* doing it twice will not hurt */
-
- sigemptyset (&sigfd_set);
-
- ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
- ev_set_priority (&sigfd_w, EV_MAXPRI);
- ev_io_start (EV_A_ &sigfd_w);
- ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
- }
- }
-
- if (sigfd >= 0)
- {
- /* TODO: check .head */
- sigaddset (&sigfd_set, w->signum);
- sigprocmask (SIG_BLOCK, &sigfd_set, 0);
-
- signalfd (sigfd, &sigfd_set, 0);
- }
- #endif
-
- ev_start (EV_A_ (W)w, 1);
- wlist_add (&signals [w->signum - 1].head, (WL)w);
-
- if (!((WL)w)->next)
- # if EV_USE_SIGNALFD
- if (sigfd < 0) /*TODO*/
- # endif
- {
- # ifdef _WIN32
- evpipe_init (EV_A);
-
- signal (w->signum, ev_sighandler);
- # else
- struct sigaction sa;
-
- evpipe_init (EV_A);
-
- sa.sa_handler = ev_sighandler;
- sigfillset (&sa.sa_mask);
- sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
- sigaction (w->signum, &sa, 0);
-
- if (origflags & EVFLAG_NOSIGMASK)
- {
- sigemptyset (&sa.sa_mask);
- sigaddset (&sa.sa_mask, w->signum);
- sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
- }
- #endif
- }
-
- EV_FREQUENT_CHECK;
- }
-
- ecb_noinline
- void
- ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- wlist_del (&signals [w->signum - 1].head, (WL)w);
- ev_stop (EV_A_ (W)w);
-
- if (!signals [w->signum - 1].head)
- {
- #if EV_MULTIPLICITY
- signals [w->signum - 1].loop = 0; /* unattach from signal */
- #endif
- #if EV_USE_SIGNALFD
- if (sigfd >= 0)
- {
- sigset_t ss;
-
- sigemptyset (&ss);
- sigaddset (&ss, w->signum);
- sigdelset (&sigfd_set, w->signum);
-
- signalfd (sigfd, &sigfd_set, 0);
- sigprocmask (SIG_UNBLOCK, &ss, 0);
- }
- else
- #endif
- signal (w->signum, SIG_DFL);
- }
-
- EV_FREQUENT_CHECK;
- }
-
- #endif
-
- #if EV_CHILD_ENABLE
-
- void
- ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
- {
- #if EV_MULTIPLICITY
- assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
- #endif
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, 1);
- wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
-
- #endif
-
- #if EV_STAT_ENABLE
-
- # ifdef _WIN32
- # undef lstat
- # define lstat(a,b) _stati64 (a,b)
- # endif
-
- #define DEF_STAT_INTERVAL 5.0074891
- #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
- #define MIN_STAT_INTERVAL 0.1074891
-
- ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
-
- #if EV_USE_INOTIFY
-
- /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
- # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
-
- ecb_noinline
- static void
- infy_add (EV_P_ ev_stat *w)
- {
- w->wd = inotify_add_watch (fs_fd, w->path,
- IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
- | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
- | IN_DONT_FOLLOW | IN_MASK_ADD);
-
- if (w->wd >= 0)
- {
- struct statfs sfs;
-
- /* now local changes will be tracked by inotify, but remote changes won't */
- /* unless the filesystem is known to be local, we therefore still poll */
- /* also do poll on <2.6.25, but with normal frequency */
-
- if (!fs_2625)
- w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
- else if (!statfs (w->path, &sfs)
- && (sfs.f_type == 0x1373 /* devfs */
- || sfs.f_type == 0x4006 /* fat */
- || sfs.f_type == 0x4d44 /* msdos */
- || sfs.f_type == 0xEF53 /* ext2/3 */
- || sfs.f_type == 0x72b6 /* jffs2 */
- || sfs.f_type == 0x858458f6 /* ramfs */
- || sfs.f_type == 0x5346544e /* ntfs */
- || sfs.f_type == 0x3153464a /* jfs */
- || sfs.f_type == 0x9123683e /* btrfs */
- || sfs.f_type == 0x52654973 /* reiser3 */
- || sfs.f_type == 0x01021994 /* tmpfs */
- || sfs.f_type == 0x58465342 /* xfs */))
- w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
- else
- w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
- }
- else
- {
- /* can't use inotify, continue to stat */
- w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
-
- /* if path is not there, monitor some parent directory for speedup hints */
- /* note that exceeding the hardcoded path limit is not a correctness issue, */
- /* but an efficiency issue only */
- if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
- {
- char path [4096];
- strcpy (path, w->path);
-
- do
- {
- int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
- | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
-
- char *pend = strrchr (path, '/');
-
- if (!pend || pend == path)
- break;
-
- *pend = 0;
- w->wd = inotify_add_watch (fs_fd, path, mask);
- }
- while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
- }
- }
-
- if (w->wd >= 0)
- wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
-
- /* now re-arm timer, if required */
- if (ev_is_active (&w->timer)) ev_ref (EV_A);
- ev_timer_again (EV_A_ &w->timer);
- if (ev_is_active (&w->timer)) ev_unref (EV_A);
- }
-
- ecb_noinline
- static void
- infy_del (EV_P_ ev_stat *w)
- {
- int slot;
- int wd = w->wd;
-
- if (wd < 0)
- return;
-
- w->wd = -2;
- slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
- wlist_del (&fs_hash [slot].head, (WL)w);
-
- /* remove this watcher, if others are watching it, they will rearm */
- inotify_rm_watch (fs_fd, wd);
- }
-
- ecb_noinline
- static void
- infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
- {
- if (slot < 0)
- /* overflow, need to check for all hash slots */
- for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
- infy_wd (EV_A_ slot, wd, ev);
- else
- {
- WL w_;
-
- for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
- {
- ev_stat *w = (ev_stat *)w_;
- w_ = w_->next; /* lets us remove this watcher and all before it */
-
- if (w->wd == wd || wd == -1)
- {
- if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
- {
- wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
- w->wd = -1;
- infy_add (EV_A_ w); /* re-add, no matter what */
- }
-
- stat_timer_cb (EV_A_ &w->timer, 0);
- }
- }
- }
- }
-
- static void
- infy_cb (EV_P_ ev_io *w, int revents)
- {
- char buf [EV_INOTIFY_BUFSIZE];
- int ofs;
- int len = read (fs_fd, buf, sizeof (buf));
-
- for (ofs = 0; ofs < len; )
- {
- struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
- infy_wd (EV_A_ ev->wd, ev->wd, ev);
- ofs += sizeof (struct inotify_event) + ev->len;
- }
- }
-
- inline_size ecb_cold
- void
- ev_check_2625 (EV_P)
- {
- /* kernels < 2.6.25 are borked
- * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
- */
- if (ev_linux_version () < 0x020619)
- return;
-
- fs_2625 = 1;
- }
-
- inline_size int
- infy_newfd (void)
- {
- #if defined IN_CLOEXEC && defined IN_NONBLOCK
- int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
- if (fd >= 0)
- return fd;
- #endif
- return inotify_init ();
- }
-
- inline_size void
- infy_init (EV_P)
- {
- if (fs_fd != -2)
- return;
-
- fs_fd = -1;
-
- ev_check_2625 (EV_A);
-
- fs_fd = infy_newfd ();
-
- if (fs_fd >= 0)
- {
- fd_intern (fs_fd);
- ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
- ev_set_priority (&fs_w, EV_MAXPRI);
- ev_io_start (EV_A_ &fs_w);
- ev_unref (EV_A);
- }
- }
-
- inline_size void
- infy_fork (EV_P)
- {
- int slot;
-
- if (fs_fd < 0)
- return;
-
- ev_ref (EV_A);
- ev_io_stop (EV_A_ &fs_w);
- close (fs_fd);
- fs_fd = infy_newfd ();
-
- if (fs_fd >= 0)
- {
- fd_intern (fs_fd);
- ev_io_set (&fs_w, fs_fd, EV_READ);
- ev_io_start (EV_A_ &fs_w);
- ev_unref (EV_A);
- }
-
- for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
- {
- WL w_ = fs_hash [slot].head;
- fs_hash [slot].head = 0;
-
- while (w_)
- {
- ev_stat *w = (ev_stat *)w_;
- w_ = w_->next; /* lets us add this watcher */
-
- w->wd = -1;
-
- if (fs_fd >= 0)
- infy_add (EV_A_ w); /* re-add, no matter what */
- else
- {
- w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
- if (ev_is_active (&w->timer)) ev_ref (EV_A);
- ev_timer_again (EV_A_ &w->timer);
- if (ev_is_active (&w->timer)) ev_unref (EV_A);
- }
- }
- }
- }
-
- #endif
-
- #ifdef _WIN32
- # define EV_LSTAT(p,b) _stati64 (p, b)
- #else
- # define EV_LSTAT(p,b) lstat (p, b)
- #endif
-
- void
- ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
- {
- if (lstat (w->path, &w->attr) < 0)
- w->attr.st_nlink = 0;
- else if (!w->attr.st_nlink)
- w->attr.st_nlink = 1;
- }
-
- ecb_noinline
- static void
- stat_timer_cb (EV_P_ ev_timer *w_, int revents)
- {
- ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
-
- ev_statdata prev = w->attr;
- ev_stat_stat (EV_A_ w);
-
- /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
- if (
- prev.st_dev != w->attr.st_dev
- || prev.st_ino != w->attr.st_ino
- || prev.st_mode != w->attr.st_mode
- || prev.st_nlink != w->attr.st_nlink
- || prev.st_uid != w->attr.st_uid
- || prev.st_gid != w->attr.st_gid
- || prev.st_rdev != w->attr.st_rdev
- || prev.st_size != w->attr.st_size
- /* || prev.st_atime != w->attr.st_atime */ /* Rspamd: to avoid constant maps reload */
- || prev.st_mtime != w->attr.st_mtime
- || prev.st_ctime != w->attr.st_ctime
- ) {
- /* we only update w->prev on actual differences */
- /* in case we test more often than invoke the callback, */
- /* to ensure that prev is always different to attr */
- w->prev = prev;
-
- #if EV_USE_INOTIFY
- if (fs_fd >= 0)
- {
- infy_del (EV_A_ w);
- infy_add (EV_A_ w);
- ev_stat_stat (EV_A_ w); /* avoid race... */
- }
- #endif
-
- ev_feed_event (EV_A_ w, EV_STAT);
- }
- }
-
- void
- ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- ev_stat_stat (EV_A_ w);
-
- if (w->interval < MIN_STAT_INTERVAL && w->interval)
- w->interval = MIN_STAT_INTERVAL;
-
- ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
- ev_set_priority (&w->timer, ev_priority (w));
-
- #if EV_USE_INOTIFY
- infy_init (EV_A);
-
- if (fs_fd >= 0)
- infy_add (EV_A_ w);
- else
- #endif
- {
- ev_timer_again (EV_A_ &w->timer);
- ev_unref (EV_A);
- }
-
- ev_start (EV_A_ (W)w, 1);
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- #if EV_USE_INOTIFY
- infy_del (EV_A_ w);
- #endif
-
- if (ev_is_active (&w->timer))
- {
- ev_ref (EV_A);
- ev_timer_stop (EV_A_ &w->timer);
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_IDLE_ENABLE
- void
- ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- pri_adjust (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ++idlecnt [ABSPRI (w)];
-
- ++idleall;
- ev_start (EV_A_ (W)w, active);
-
- array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
- idles [ABSPRI (w)][active - 1] = w;
- }
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
- ev_active (idles [ABSPRI (w)][active - 1]) = active;
-
- ev_stop (EV_A_ (W)w);
- --idleall;
- }
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_PREPARE_ENABLE
- void
- ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, ++preparecnt);
- array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
- prepares [preparecnt - 1] = w;
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- prepares [active - 1] = prepares [--preparecnt];
- ev_active (prepares [active - 1]) = active;
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_CHECK_ENABLE
- void
- ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, ++checkcnt);
- array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
- checks [checkcnt - 1] = w;
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- checks [active - 1] = checks [--checkcnt];
- ev_active (checks [active - 1]) = active;
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_EMBED_ENABLE
- ecb_noinline
- void
- ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
- {
- ev_run (w->other, EVRUN_NOWAIT);
- }
-
- static void
- embed_io_cb (EV_P_ ev_io *io, int revents)
- {
- ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
-
- if (ev_cb (w))
- ev_feed_event (EV_A_ (W)w, EV_EMBED);
- else
- ev_run (w->other, EVRUN_NOWAIT);
- }
-
- static void
- embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
- {
- ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
-
- {
- EV_P = w->other;
-
- while (fdchangecnt)
- {
- fd_reify (EV_A);
- ev_run (EV_A_ EVRUN_NOWAIT);
- }
- }
- }
-
- #if EV_FORK_ENABLE
- static void
- embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
- {
- ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
-
- ev_embed_stop (EV_A_ w);
-
- {
- EV_P = w->other;
-
- ev_loop_fork (EV_A);
- ev_run (EV_A_ EVRUN_NOWAIT);
- }
-
- ev_embed_start (EV_A_ w);
- }
- #endif
-
- #if 0
- static void
- embed_idle_cb (EV_P_ ev_idle *idle, int revents)
- {
- ev_idle_stop (EV_A_ idle);
- }
- #endif
-
- void
- ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- {
- EV_P = w->other;
- assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
- ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
- }
-
- EV_FREQUENT_CHECK;
-
- ev_set_priority (&w->io, ev_priority (w));
- ev_io_start (EV_A_ &w->io);
-
- ev_prepare_init (&w->prepare, embed_prepare_cb);
- ev_set_priority (&w->prepare, EV_MINPRI);
- ev_prepare_start (EV_A_ &w->prepare);
-
- #if EV_FORK_ENABLE
- ev_fork_init (&w->fork, embed_fork_cb);
- ev_fork_start (EV_A_ &w->fork);
- #endif
-
- /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
-
- ev_start (EV_A_ (W)w, 1);
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_io_stop (EV_A_ &w->io);
- ev_prepare_stop (EV_A_ &w->prepare);
- #if EV_FORK_ENABLE
- ev_fork_stop (EV_A_ &w->fork);
- #endif
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_FORK_ENABLE
- void
- ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, ++forkcnt);
- array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
- forks [forkcnt - 1] = w;
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- forks [active - 1] = forks [--forkcnt];
- ev_active (forks [active - 1]) = active;
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_CLEANUP_ENABLE
- void
- ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, ++cleanupcnt);
- array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
- cleanups [cleanupcnt - 1] = w;
-
- /* cleanup watchers should never keep a refcount on the loop */
- ev_unref (EV_A);
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
- ev_ref (EV_A);
-
- {
- int active = ev_active (w);
-
- cleanups [active - 1] = cleanups [--cleanupcnt];
- ev_active (cleanups [active - 1]) = active;
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
- #endif
-
- #if EV_ASYNC_ENABLE
- void
- ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
- {
- if (ecb_expect_false (ev_is_active (w)))
- return;
-
- w->sent = 0;
-
- evpipe_init (EV_A);
-
- EV_FREQUENT_CHECK;
-
- ev_start (EV_A_ (W)w, ++asynccnt);
- array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
- asyncs [asynccnt - 1] = w;
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
- {
- clear_pending (EV_A_ (W)w);
- if (ecb_expect_false (!ev_is_active (w)))
- return;
-
- EV_FREQUENT_CHECK;
-
- {
- int active = ev_active (w);
-
- asyncs [active - 1] = asyncs [--asynccnt];
- ev_active (asyncs [active - 1]) = active;
- }
-
- ev_stop (EV_A_ (W)w);
-
- EV_FREQUENT_CHECK;
- }
-
- void
- ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
- {
- w->sent = 1;
- evpipe_write (EV_A_ &async_pending);
- }
- #endif
-
- /*****************************************************************************/
-
- struct ev_once
- {
- ev_io io;
- ev_timer to;
- void (*cb)(int revents, void *arg);
- void *arg;
- };
-
- static void
- once_cb (EV_P_ struct ev_once *once, int revents)
- {
- void (*cb)(int revents, void *arg) = once->cb;
- void *arg = once->arg;
-
- ev_io_stop (EV_A_ &once->io);
- ev_timer_stop (EV_A_ &once->to);
- ev_free (once);
-
- cb (revents, arg);
- }
-
- static void
- once_cb_io (EV_P_ ev_io *w, int revents)
- {
- struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
-
- once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
- }
-
- static void
- once_cb_to (EV_P_ ev_timer *w, int revents)
- {
- struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
-
- once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
- }
-
- void
- ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
- {
- struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
-
- once->cb = cb;
- once->arg = arg;
-
- ev_init (&once->io, once_cb_io);
- if (fd >= 0)
- {
- ev_io_set (&once->io, fd, events);
- ev_io_start (EV_A_ &once->io);
- }
-
- ev_init (&once->to, once_cb_to);
- if (timeout >= 0.)
- {
- ev_timer_set (&once->to, timeout, 0.);
- ev_timer_start (EV_A_ &once->to);
- }
- }
- /*****************************************************************************/
-
- #if EV_WALK_ENABLE
- ecb_cold
- void
- ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
- {
- int i, j;
- ev_watcher_list *wl, *wn;
-
- if (types & (EV_IO | EV_EMBED))
- for (i = 0; i < anfdmax; ++i)
- for (wl = anfds [i].head; wl; )
- {
- wn = wl->next;
-
- #if EV_EMBED_ENABLE
- if (ev_cb ((ev_io *)wl) == embed_io_cb)
- {
- if (types & EV_EMBED)
- cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
- }
- else
- #endif
- #if EV_USE_INOTIFY
- if (ev_cb ((ev_io *)wl) == infy_cb)
- ;
- else
- #endif
- if ((ev_io *)wl != &pipe_w)
- if (types & EV_IO)
- cb (EV_A_ EV_IO, wl);
-
- wl = wn;
- }
-
- if (types & (EV_TIMER | EV_STAT))
- for (i = timercnt + HEAP0; i-- > HEAP0; )
- #if EV_STAT_ENABLE
- /*TODO: timer is not always active*/
- if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
- {
- if (types & EV_STAT)
- cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
- }
- else
- #endif
- if (types & EV_TIMER)
- cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
-
- #if EV_PERIODIC_ENABLE
- if (types & EV_PERIODIC)
- for (i = periodiccnt + HEAP0; i-- > HEAP0; )
- cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
- #endif
-
- #if EV_IDLE_ENABLE
- if (types & EV_IDLE)
- for (j = NUMPRI; j--; )
- for (i = idlecnt [j]; i--; )
- cb (EV_A_ EV_IDLE, idles [j][i]);
- #endif
-
- #if EV_FORK_ENABLE
- if (types & EV_FORK)
- for (i = forkcnt; i--; )
- if (ev_cb (forks [i]) != embed_fork_cb)
- cb (EV_A_ EV_FORK, forks [i]);
- #endif
-
- #if EV_ASYNC_ENABLE
- if (types & EV_ASYNC)
- for (i = asynccnt; i--; )
- cb (EV_A_ EV_ASYNC, asyncs [i]);
- #endif
-
- #if EV_PREPARE_ENABLE
- if (types & EV_PREPARE)
- for (i = preparecnt; i--; )
- # if EV_EMBED_ENABLE
- if (ev_cb (prepares [i]) != embed_prepare_cb)
- # endif
- cb (EV_A_ EV_PREPARE, prepares [i]);
- #endif
-
- #if EV_CHECK_ENABLE
- if (types & EV_CHECK)
- for (i = checkcnt; i--; )
- cb (EV_A_ EV_CHECK, checks [i]);
- #endif
-
- #if EV_SIGNAL_ENABLE
- if (types & EV_SIGNAL)
- for (i = 0; i < EV_NSIG - 1; ++i)
- for (wl = signals [i].head; wl; )
- {
- wn = wl->next;
- cb (EV_A_ EV_SIGNAL, wl);
- wl = wn;
- }
- #endif
-
- #if EV_CHILD_ENABLE
- if (types & EV_CHILD)
- for (i = (EV_PID_HASHSIZE); i--; )
- for (wl = childs [i]; wl; )
- {
- wn = wl->next;
- cb (EV_A_ EV_CHILD, wl);
- wl = wn;
- }
- #endif
- // EV_STAT 0x00001000 /* stat data changed */
- // EV_EMBED 0x00010000 /* embedded event loop needs sweep */
- }
- #endif
- void
- ev_now_update_if_cheap (EV_P) EV_NOEXCEPT
- {
- if (have_cheap_timer) time_update (EV_A_ 1e100);
- }
-
- int
- ev_active_cnt (EV_P) EV_NOEXCEPT
- {
- return activecnt;
- }
-
- #if EV_MULTIPLICITY
- #include "ev_wrap.h"
- #endif
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